12 Days of Christmas
8th
24 Game
8th
99 Bottles of Beer
125th
Arithmetic Numbers
23rd
Arrows
11th
Ascending Primes
12th
ASCII Table
32nd
Catalan Numbers
32nd
Christmas Trees
71st
Collatz
1st
Cubes
27th
Day of Week
1st
Diamonds
40th
Evil Numbers
60th
Evil Numbers (Long)
34th
Factorial Factorisation
8th
Farey Sequence
16th
Fibonacci
65th
Fizz Buzz
101st
Fractions
14th
Happy Numbers
31st
Happy Numbers (Long)
16th
Inventory Sequence
18th
Kolakoski Constant
14th
Leap Years
26th
Levenshtein Distance
9th
Leyland Numbers
29th
Niven Numbers
44th
Niven Numbers (Long)
35th
Odious Numbers
61st
Odious Numbers (Long)
35th
Pascal’s Triangle
99th39th
Pernicious Numbers
35th
Prime Numbers
76th
Prime Numbers (Long)
32nd
Quine
1st
Recamán
27th
Rule 110
22nd
Sierpiński Triangle
27th
Smith Numbers
11th
Tongue-twisters
24th
United States
19th
λ
14th
π
21st