12 Days of Christmas
42nd
Collatz
69th
Divisors
142nd
Evil Numbers
283rd
Fibonacci
361st
Fizz Buzz
1st
Foo Fizz Buzz Bar
55th
Happy Numbers
77th
Happy Numbers (Long)
42nd
Kolakoski Sequence
86th
Leap Years
74th
Leyland Numbers
41st
Look and Say
28th
Niven Numbers
132nd
Pascal’s Triangle
78th
Pernicious Numbers
130th
Prime Numbers
62nd
Quine
33rd
Recamán
69th
Tongue-twisters
103rd