12 Days of Christmas
42nd
Collatz
71st
Divisors
142nd
Evil Numbers
285th
Fibonacci
364th
Fizz Buzz
1st
Foo Fizz Buzz Bar
56th
Happy Numbers
77th
Happy Numbers (Long)
43rd
Kolakoski Sequence
87th
Leap Years
75th
Leyland Numbers
42nd
Look and Say
28th
Niven Numbers
135th
Pascal’s Triangle
78th
Pernicious Numbers
130th
Prime Numbers
64th
Quine
33rd
Recamán
69th
Tongue-twisters
103rd