12 Days of Christmas
24th
99 Bottles of Beer
11th
223rd
17th
Abundant Numbers
72nd
25th
Christmas Trees
261st
17th
Cubes
201st
15th
Diamonds
5th
16th
Divisors
405th
18th
Emirp Numbers
164th
16th
Evil Numbers
13th
303rd
23rd
Fibonacci
13th
178th
141st
131st
58th
Fizz Buzz
74th
84th
Happy Numbers
138th
Happy Numbers (Long)
12th
Kolakoski Constant
18th
Kolakoski Sequence
8th
13th
Leap Years
520th
Leyland Numbers
107th
17th
Morse Decoder
151st
Niven Numbers
1st
50th
25th
Odious Numbers
214th
20th
Pangram Grep
166th
Pernicious Numbers
142nd
25th
Prime Numbers
19th
120th
35th
Quine
1st
723rd
Recamán
56th
Rule 110
110th
14th
Smith Numbers
182nd
4th
Star Wars Opening Crawl
106th
Sudoku v2
10th
Vampire Numbers
81st
16th
Van Eck Sequence
9th
λ
10th
27th
π
23rd
37th
10th
68th
82nd
78th
17th
35th
33rd
8th
38th
43rd
10th
29th
73rd
163rd
82nd
28th
33rd
9th
59th
65th
28th
223rd
65th
101st
32nd
11th
9th
8th
25th
τ
10th
23rd
φ
9th
25th
√2
9th
169th
28th
𝑒
12th
102nd
34th