12 Days of Christmas
8th
24 Game
8th
99 Bottles of Beer
122nd
Arithmetic Numbers
23rd
Arrows
11th
Ascending Primes
12th
ASCII Table
30th
Catalan Numbers
29th
Christmas Trees
72nd
Collatz
1st
Cubes
27th
Day of Week
1st
Diamonds
41st
Evil Numbers
59th
Evil Numbers (Long)
34th
Factorial Factorisation
8th
Farey Sequence
16th
Fibonacci
58th
Fizz Buzz
100th
Fractions
14th
Happy Numbers
31st
Happy Numbers (Long)
16th
Inventory Sequence
17th
Kolakoski Constant
14th
Leap Years
23rd
Levenshtein Distance
9th
Leyland Numbers
28th
Niven Numbers
42nd
Niven Numbers (Long)
34th
Odious Numbers
61st
Odious Numbers (Long)
35th
Pascal’s Triangle
94th39th
Pernicious Numbers
35th
Prime Numbers
72nd
Prime Numbers (Long)
31st
Quine
1st
Recamán
27th
Rule 110
21st
Sierpiński Triangle
27th
Smith Numbers
11th
Tongue-twisters
24th
United States
19th
λ
14th
π
18th