12 Days of Christmas
18th
24 Game
8th
99 Bottles of Beer
130th
Arithmetic Numbers
26th
Arrows
13th
Ascending Primes
15th
ASCII Table
34th
Catalan Numbers
35th
Christmas Trees
75th
Collatz
1st
Cubes
29th
Day of Week
1st
Diamonds
47th
Evil Numbers
64th
Evil Numbers (Long)
36th
Factorial Factorisation
9th
Farey Sequence
18th
Fibonacci
70th
Fizz Buzz
102nd
Fractions
15th
Happy Numbers
33rd
Happy Numbers (Long)
17th
Inventory Sequence
19th
Kolakoski Constant
15th
Leap Years
32nd
Levenshtein Distance
10th
Leyland Numbers
32nd
Niven Numbers
52nd
Niven Numbers (Long)
38th
Odious Numbers
65th
Odious Numbers (Long)
37th
Pascal’s Triangle
107th42nd
Pernicious Numbers
44th
Prime Numbers
82nd
Prime Numbers (Long)
37th
Quine
1st
Recamán
30th
Rule 110
25th
Sierpiński Triangle
29th
Smith Numbers
13th
Tongue-twisters
25th
United States
20th
λ
17th
π
26th