12 Days of Christmas
18th
24 Game
8th
99 Bottles of Beer
123rd
Arithmetic Numbers
23rd
Arrows
11th
Ascending Primes
12th
ASCII Table
31st
Catalan Numbers
31st
Christmas Trees
72nd
Collatz
1st
Cubes
28th
Day of Week
1st
Diamonds
42nd
Evil Numbers
59th
Evil Numbers (Long)
34th
Factorial Factorisation
8th
Farey Sequence
16th
Fibonacci
60th
Fizz Buzz
101st
Fractions
14th
Happy Numbers
31st
Happy Numbers (Long)
16th
Inventory Sequence
18th
Kolakoski Constant
14th
Leap Years
24th
Levenshtein Distance
9th
Leyland Numbers
29th
Niven Numbers
45th
Niven Numbers (Long)
35th
Odious Numbers
61st
Odious Numbers (Long)
35th
Pascal’s Triangle
96th39th
Pernicious Numbers
39th
Prime Numbers
72nd
Prime Numbers (Long)
31st
Quine
1st
Recamán
27th
Rule 110
22nd
Sierpiński Triangle
28th
Smith Numbers
11th
Tongue-twisters
24th
United States
19th
λ
15th
π
21st