12 Days of Christmas
145th
Collatz
70th
Divisors
142nd
Evil Numbers
283rd
Fibonacci
363rd
Fizz Buzz
1st
Foo Fizz Buzz Bar
50th
Happy Numbers
69th
Happy Numbers (Long)
42nd
Kolakoski Sequence
87th
Leap Years
74th
Leyland Numbers
38th
Look and Say
28th
Niven Numbers
134th
Pascal’s Triangle
78th
Pernicious Numbers
130th
Prime Numbers
62nd
Quine
33rd
Recamán
69th
Tongue-twisters
86th