12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
brainfuck
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
4th
20th
16th
CSS Colors
Cubes
Day of Week
Diamonds
Divisors
20th
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
13th
Fizz Buzz
Foo Fizz Buzz Bar
7th
Fractions
Gijswijt’s Sequence
Happy Numbers
Happy Numbers (Long)
Inventory Sequence
ISBN
Kolakoski Constant
Kolakoski Sequence
10th
Leap Years
10th
Levenshtein Distance
Leyland Numbers
ln 2
2nd
Look and Say
Lucky Numbers
Morse Encoder
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
13th
Odious Numbers (Long)
Ordinal Numbers
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Prime Numbers
5th
Prime Numbers (Long)
5th
Quine
1st
Recamán
Repeating Decimals
Reverse Polish Notation
Rijndael S-box
💎
Roman to Arabic
Rule 110
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Time Distance
Tongue-twisters
United States
Vampire Numbers
Van Eck Sequence
Zodiac Signs
γ
3rd
λ
π
3rd
10th
60th
26th
13th
51st
81st
57th
31st
17th
41st
12th
21st
14th
23rd
29th
9th
15th
15th
51st
22nd
49th
28th
14th
69th
33rd
82nd
38th
33rd
25th
23rd
24th
59th
54th
60th
23rd
387th
22nd
55th
15th
55th
41st
26th
41st
9th
15th
5th
25th
6th
7th
22ndτ
4th
φ
5th
√2
𝑒
4th