12 Days of Christmas
8th
10th
8th
4th
123rd
80th
4th
7th
25th
3rd
11th
45th
15th
31st
768th
7th
11th
7th
10th
10th
9th
24 Game
2nd
3rd
6th
2nd
8th
9th
5th
3rd
2nd
14th
5th
3rd
3rd
3rd
8th
23rd
7th
2nd
5th
2nd
7th
44th
9th
3rd
4th
3rd
4th
2nd
3rd
99 Bottles of Beer
10th
7th
6th
6th
9th
60th
110th
29th
3rd
5th
27th
13th
6th
7th
76th
361st
13th
16th
20th
716th
6th
10th
33rd
6th
13th
10th
12th
Abundant Numbers
10th
10th
14th
11th
12th
40th
34th
27th
5th
4th
20th
23rd
17th
11th
13th
40th
25th
5th
9th
9th
173rd
31st
14th
17th
12th
9th
28th
120th
40th
9th
16th
22nd
7th
16th
10th
14th
Abundant Numbers (Long)
7th
6th
13th
10th
5th
26th
23rd
24th
5th
6th
21st
17th
13th
12th
23rd
20th
4th
10th
15th
84th
22nd
10th
12th
11th
9th
22nd
92nd
27th
4th
6th
14th
6th
11th
7th
9th
Arabic to Roman
5th
56th
30th
1st
22nd
14th
15th
57th
15th
288th
7th
13th
Arithmetic Numbers
8th
6th
7th
5th
2nd
23rd
20th
13th
1st
5th
23rd
9th
11th
8th
16th
3rd
5th
10th
48th
9th
6th
8th
12th
75th
19th
3rd
5th
4th
10th
5th
4th
Arrows
3rd
3rd
22nd
6th
9th
128th
Ascending Primes
6th
5th
8th
6th
31st
17th
19th
3rd
2nd
19th
8th
6th
13th
3rd
4th
13th
8th
10th
3rd
8th
9th
9th
50th
25th
8th
💎
4th
2nd
6th
3rd
6th
ASCII Table
7th
9th
10th
11th
10th
88th
48th
38th
6th
10th
29th
11th
7th
8th
9th
24th
19th
17th
5th
9th
34th
95th
15th
13th
7th
17th
9th
15th
23rd
27th
11th
255th
9th
42nd
29th
14th
7th
6th
5th
8th
brainfuck
21st
4th
10th
20th
108th
Catalan Numbers
18th
4th
4th
8th
15th
30th
16th
9th
3rd
34th
16th
22nd
5th
3rd
29th
28th
11th
5th
7th
297th
50th
5th
5th
5th
6th
3rd
4th
Catalan’s Constant
4th
3rd
4th
7th
8th
15th
6th
2nd
6th
19th
7th
6th
6th
4th
10th
4th
4th
10th
35th
41st
5th
3rd
9th
8th
7th
9th
96th
11th
17th
7th
4th
4th
7th
4th
4th
3rd
4th
Christmas Trees
9th
6th
7th
27th
31st
41st
15th
3rd
22nd
16th
12th
3rd
14th
5th
17th
146th
17th
15th
10th
230th
42nd
9th
7th
19th
3rd
10th
7th
12th
Collatz
16th
10th
16th
15th
7th
48th
3rd
23rd
4th
7th
21st
18th
36th
29th
5th
17th
3rd
143rd
30th
12th
19th
26th
77th
53rd
6th
5th
8th
11th
5th
21st
CSS Colors
3rd
5th
2nd
3rd
4th
22nd
5th
3rd
💎
133rd
11th
8th
8th
16th
160th
5th
6th
9th
Cubes
4th
6th
6th
8th
34th
37th
14th
2nd
17th
4th
16th
10th
4th
131st
8th
6th
4th
4th
5th
5th
Day of Week
5th
3rd
17th
13th
3rd
26th
15th
7th
17th
85th
11th
12th
DFA Simulator
6th
Diamonds
7th
5th
10th
10th
9th
8th
13th
61st
46th
30th
2nd
6th
28th
33rd
10th
13th
19th
3rd
4th
32nd
107th
17th
7th
26th
28th
37th
352nd
62nd
7th
6th
2nd
8th
7th
5th
Divisors
24th
7th
16th
46th
13th
13th
16th
41st
71st
30th
10th
10th
40th
25th
15th
16th
9th
29th
23rd
7th
10th
12th
75th
31st
20th
1st
17th
10th
71st
663rd
93rd
6th
12th
42nd
7th
19th
11th
16th
Emirp Numbers
9th
7th
8th
6th
20th
23rd
10th
3rd
1st
21st
14th
15th
17th
5th
6th
16th
14th
5th
12th
35th
107th
67th
10th
1st
7th
4th
5th
4th
7th
Emirp Numbers (Long)
5th
5th
7th
5th
39th
26th
25th
4th
5th
16th
11th
11th
16th
3rd
6th
20th
12th
5th
14th
17th
58th
32nd
4th
5th
3rd
6th
2nd
7th
Emojify
6th
7th
3rd
8th
3rd
39th
💎
4th
13th
10th
5th
7th
7th
3rd
💎
122nd
13th
5th
7th
12th
79th
24th
10th
9th
Evil Numbers
6th
17th
11th
21st
11th
12th
8th
53rd
31st
32nd
4th
1st
27th
20th
15th
15th
15th
45th
29th
8th
10th
21st
65th
24th
19th
21st
17th
11th
24th
98th
58th
17th
1st
8th
28th
5th
13th
9th
15th
Evil Numbers (Long)
9th
10th
14th
12th
10th
11th
3rd
57th
47th
25th
5th
7th
25th
16th
11th
16th
15th
25th
26th
4th
11th
15th
95th
18th
13th
15th
10th
11th
30th
29th
31st
13th
7th
7th
17th
5th
9th
7th
11th
Factorial Factorisation
4th
6th
5th
6th
3rd
5th
4th
22nd
11th
12th
4th
1st
17th
8th
9th
6th
7th
3rd
3rd
29th
8th
8th
7th
3rd
10th
63rd
22nd
8th
5th
4th
3rd
5th
2nd
4th
Farey Sequence
4th
3rd
14th
5th
39th
22nd
25th
5th
4th
28th
10th
15th
2nd
7th
16th
48th
9th
6th
17th
15th
98th
21st
3rd
5th
3rd
8th
3rd
7th
Fibonacci
73rd
26th
33rd
102nd
19th
27th
12th
152nd
96th
72nd
7th
9th
34th
34th
30th
110th
55th
24th
13th
83rd
519th
16th
56th
83rd
65th
156th
149th
130th
99th
5th
50th
89th
18th
55th
31st
35th
Fizz Buzz
111th
30th
27th
126th
25th
18th
47th
30th
164th
63rd
6th
21st
40th
15th
54th
70th
25th
130th
1st
67th
91st
72nd
128th
336th
46th
1st
11th
73rd
140th
10th
44th
35th
26th
Foo Fizz Buzz Bar
10th
8th
15th
25th
13th
7th
4th
42nd
94th
27th
3rd
30th
16th
21st
5th
12th
84th
204th
28th
8th
15th
205th
46th
7th
14th
15th
5th
17th
9th
19th
Forsyth–Edwards Notation
5th
3rd
💎
22nd
10th
11th
110th
13th
Fractions
3rd
6th
26th
10th
12th
127th
Game of Life
12th
Gijswijt’s Sequence
5th
3rd
4th
9th
2nd
15th
14th
11th
3rd
3rd
20th
6th
12th
7th
4th
6th
8th
31st
8th
3rd
6th
9th
94th
16th
8th
8th
5th
5th
4th
9th
4th
9th
Happy Numbers
9th
10th
17th
13th
8th
34th
26th
14th
5th
1st
13th
19th
31st
5th
9th
17th
21st
5th
21st
27th
33rd
88th
52nd
22nd
12th
7th
8th
8th
4th
10th
Happy Numbers (Long)
5th
7th
13th
7th
57th
32nd
24th
4th
5th
26th
18th
26th
6th
10th
23rd
17th
11th
20th
17th
211th
45th
5th
5th
4th
7th
6th
15th
Hexdump
6th
Intersection
2nd
5th
15th
9th
Inventory Sequence
7th
4th
9th
10th
33rd
23rd
25th
6th
4th
25th
15th
13th
3rd
7th
18th
12th
6th
12th
17th
155th
26th
4th
4th
4th
7th
3rd
8th
ISBN
4th
3rd
19th
9th
20th
136th
Jacobi Symbol
10th
Kolakoski Constant
7th
3rd
4th
10th
17th
13th
12th
2nd
7th
21st
8th
5th
7th
8th
13th
4th
2nd
14th
35th
11th
5th
5th
10th
9th
10th
7th
94th
12th
4th
26th
6th
5th
5th
7th
6th
4th
3rd
4th
Kolakoski Sequence
13th
8th
7th
14th
11th
45th
25th
26th
5th
5th
28th
18th
21st
5th
5th
28th
96th
18th
7th
16th
19th
247th
5th
45th
13th
5th
4th
10th
7th
13th
Leap Years
21st
9th
10th
10th
5th
42nd
31st
20th
8th
15th
21st
23rd
17th
12th
1st
18th
23rd
6th
10th
43rd
128th
20th
13th
23rd
13th
69th
131st
38th
27th
9th
27th
16th
9th
11th
13th
11th
22nd
Levenshtein Distance
5th
32nd
14th
12th
134th
Leyland Numbers
5th
5th
8th
4th
26th
32nd
19th
6th
3rd
32nd
10th
13th
4th
9th
23rd
19th
6th
18th
19th
296th
42nd
4th
11th
4th
7th
5th
10th
ln 2
7th
3rd
4th
6th
13th
15th
12th
3rd
5th
23rd
8th
6th
7th
4th
7th
12th
3rd
2nd
15th
34th
27th
3rd
5th
22nd
6th
8th
9th
89th
10th
4th
17th
5th
3rd
4th
5th
3rd
3rd
3rd
4th
Look and Say
6th
6th
7th
7th
27th
35th
22nd
8th
4th
25th
20th
17th
3rd
5th
27th
15th
8th
8th
28th
305th
54th
9th
5th
4th
9th
7th
8th
Lucky Numbers
4th
4th
8th
8th
30th
21st
14th
2nd
5th
27th
11th
31st
4th
5th
14th
11th
8th
9th
11th
178th
22nd
6th
5th
5th
6th
4th
5th
Lucky Tickets
5th
6th
3rd
22nd
11th
5th
111th
7th
Maze
3rd
19th
8th
9th
5th
68th
Medal Tally
4th
23rd
7th
79th
Morse Decoder
2nd
18th
4th
127th
7th
Morse Encoder
5th
3rd
18th
3rd
2nd
11th
6th
179th
8th
Musical Chords
8th
N Queens
2nd
2nd
4th
3rd
11th
11th
5th
💎
1st
10th
6th
2nd
4th
2nd
2nd
9th
4th
2nd
4th
3rd
7th
35th
11th
3rd
3rd
1st
3rd
2nd
2nd
Niven Numbers
12th
13th
18th
35th
15th
14th
11th
49th
29th
29th
8th
1st
24th
21st
17th
21st
10th
32nd
6th
17th
24th
1st
24th
12th
38th
41st
66th
50th
23rd
22nd
10th
15th
6th
18th
11th
18th
Niven Numbers (Long)
8th
8th
13th
12th
10th
10th
2nd
38th
31st
24th
4th
7th
21st
15th
10th
15th
1st
19th
3rd
14th
17th
19th
10th
22nd
27th
60th
1st
6th
5th
11th
7th
15th
Number Spiral
4th
4th
6th
7th
8th
10th
3rd
40th
23rd
15th
4th
10th
22nd
7th
12th
9th
7th
14th
2nd
6th
16th
8th
5th
7th
13th
9th
121st
26th
4th
4th
4th
4th
3rd
7th
Odious Numbers
4th
15th
12th
20th
11th
9th
9th
47th
26th
28th
1st
1st
28th
19th
15th
15th
7th
15th
42nd
30th
8th
10th
22nd
61st
26th
19th
21st
12th
11th
23rd
114th
47th
17th
1st
8th
27th
6th
13th
8th
14th
Odious Numbers (Long)
8th
10th
16th
12th
9th
11th
3rd
45th
41st
21st
5th
7th
26th
16th
12th
16th
15th
23rd
26th
4th
11th
12th
76th
20th
14th
16th
9th
10th
28th
76th
29th
11th
7th
7th
17th
5th
9th
6th
11th
Ordinal Numbers
13th
8th
8th
5th
60th
48th
23rd
5th
6th
28th
15th
10th
7th
179th
16th
30th
9th
240th
50th
17th
14th
Pangram Grep
15th
7th
5th
57th
57th
29th
3rd
21st
17th
23rd
17th
7th
42nd
16th
13th
32nd
134th
66th
13th
12th
Pascal’s Triangle
7th
3rd
15th
18th
12th
12th
8th
98th
52nd
39th
4th
5th
31st
14th
11th
11th
33rd
5th
9th
41st
24th
13th
28th
66th
42nd
36th
368th
79th
6th
7th
7th
11th
8th
11th
Pernicious Numbers
4th
14th
17th
21st
14th
16th
12th
32nd
23rd
22nd
6th
1st
18th
18th
15th
1st
1st
1st
22nd
6th
4th
1st
36th
13th
15th
1st
1st
22nd
1st
17th
1st
2nd
11th
12th
5th
1st
7th
1st
Pernicious Numbers (Long)
6th
7th
10th
8th
8th
7th
4th
22nd
18th
13th
4th
7th
20th
11th
8th
7th
1st
15th
12th
3rd
11th
17th
33rd
13th
10th
8th
7th
12th
63rd
20th
12th
4th
6th
12th
5th
8th
4th
4th
Poker
4th
8th
6th
Prime Numbers
9th
10th
13th
18th
12th
10th
101st
56th
37th
1st
1st
32nd
14th
11th
15th
3rd
1st
41st
34th
8th
12th
43rd
132nd
26th
10th
24th
1st
65th
288th
85th
69th
1st
5th
35th
6th
1st
10th
16th
Prime Numbers (Long)
15th
7th
12th
13th
12th
3rd
61st
35th
33rd
8th
8th
29th
18th
12th
13th
1st
23rd
23rd
6th
10th
29th
63rd
20th
8th
17th
15th
27th
140th
41st
39th
5th
11th
18th
6th
12th
8th
19th
Proximity Grid
9th
7th
QR Decoder
2nd
8th
Quine
1st
1st
82nd
7th
23rd
63rd
52nd
Recamán
12th
5th
9th
6th
49th
35th
32nd
5th
4th
28th
16th
18th
5th
6th
27th
19th
12th
10th
20th
19th
24th
334th
40th
7th
5th
4th
9th
6th
10th
Repeating Decimals
8th
Reverse Polish Notation
2nd
5th
23rd
12th
175th
Rijndael S-box
6th
13th
2nd
5th
8th
6th
3rd
38th
13th
2nd
3rd
14th
11th
5th
7th
2nd
3rd
3rd
7th
7th
6th
61st
16th
2nd
3rd
3rd
12th
1st
4th
Rock-paper-scissors-Spock-lizard
3rd
3rd
3rd
3rd
22nd
2nd
7th
9th
250th
10th
Roman to Arabic
5th
15th
15th
8th
Rule 110
2nd
6th
8th
5th
48th
21st
3rd
25th
5th
5th
14th
19th
223rd
10th
5th
3rd
6th
7th
11th
Seven Segment
12th
5th
4th
18th
4th
11th
17th
124th
8th
SI Units
2nd
5th
3rd
Sierpiński Triangle
6th
6th
5th
57th
22nd
6th
5th
30th
4th
7th
19th
21st
246th
7th
7th
3rd
9th
6th
17th
Smith Numbers
7th
6th
8th
7th
32nd
24th
18th
4th
3rd
22nd
10th
12th
5th
4th
21st
13th
5th
7th
13th
9th
183rd
35th
4th
4th
4th
5th
4th
8th
Spelling Numbers
2nd
2nd
9th
62nd
6th
4th
Star Wars Opening Crawl
4th
2nd
7th
3rd
Sudoku
8th
Ten-pin Bowling
17th
63rd
Time Distance
3rd
9th
Tongue-twisters
6th
7th
6th
6th
8th
6th
6th
23rd
35th
8th
2nd
6th
21st
17th
11th
7th
10th
5th
10th
5th
12th
19th
7th
17th
6th
11th
3rd
31st
105th
10th
15th
6th
6th
11th
16th
14th
15th
20th
38th
7th
143rd
8th
9th
9th
28th
11th
7th
9th
9th
2nd
3rd
7th
6th
6th
8th
United States
13th
2nd
5th
4th
31st
15th
3rd
4th
20th
5th
4th
2nd
124th
12th
7th
10th
10th
97th
3rd
8th
15th
Vampire Numbers
4th
4th
8th
4th
5th
31st
25th
17th
3rd
2nd
21st
12th
18th
5th
4th
14th
10th
6th
11th
7th
166th
35th
4th
5th
4th
4th
2nd
5th
Van Eck Sequence
7th
6th
9th
8th
3rd
47th
34th
27th
5th
4th
25th
11th
16th
4th
5th
20th
15th
8th
12th
18th
247th
35th
5th
6th
3rd
7th
6th
11th
Zodiac Signs
3rd
2nd
22nd
9th
94th
7th
γ
💎
4th
4th
3rd
4th
7th
19th
12th
8th
2nd
5th
10th
7th
4th
5th
4th
6th
4th
4th
3rd
4th
3rd
3rd
7th
21st
42nd
3rd
2nd
3rd
8th
6th
5th
42nd
9th
7th
3rd
12th
5th
3rd
3rd
3rd
5th
3rd
2nd
4th
λ
5th
4th
5th
4th
13th
23rd
20th
11th
3rd
7th
16th
8th
6th
5th
3rd
6th
4th
5th
13th
3rd
4th
8th
59th
13th
5th
4th
7th
15th
10th
7th
75th
11th
3rd
19th
8th
8th
10th
4th
4th
4th
4th
5th
π
9th
5th
7th
4th
13th
44th
37th
19th
3rd
8th
30th
10th
10th
8th
7th
8th
5th
17th
27th
5th
3rd
27th
142nd
55th
13th
9th
36th
18th
23rd
10th
355th
28th
5th
70th
11th
7th
11th
7th
5th
5th
5th
5th
τ
8th
4th
5th
4th
12th
23rd
20th
13th
3rd
7th
25th
9th
8th
8th
7th
8th
5th
14th
18th
4th
3rd
21st
74th
37th
11th
6th
30th
13th
13th
9th
197th
18th
5th
47th
8th
7th
7th
7th
4th
4th
5th
5th
φ
11th
3rd
4th
4th
13th
21st
20th
12th
1st
8th
26th
12th
9th
11th
7th
8th
5th
24th
26th
5th
3rd
14th
59th
48th
19th
9th
29th
15th
13th
11th
134th
21st
6th
51st
8th
7th
7th
8th
4th
6th
4th
4th
√2
14th
3rd
5th
4th
13th
22nd
27th
14th
1st
7th
27th
12th
10th
10th
7th
9th
5th
31st
25th
4th
3rd
1st
67th
40th
10th
6th
29th
11th
13th
11th
141st
18th
5th
46th
10th
7th
8th
8th
4th
7th
5th
4th
𝑒
10th
4th
11th
5th
6th
14th
38th
30th
22nd
6th
8th
32nd
8th
12th
8th
8th
10th
5th
19th
27th
6th
4th
20th
68th
51st
11th
8th
29th
17th
14th
9th
294th
19th
29th
5th
56th
12th
7th
6th
8th
5th
5th
5th
7th