12 Days of Christmas
134th
Collatz
58th
Divisors
134th
Evil Numbers
260th
Fibonacci
329th
Fizz Buzz
1st
Foo Fizz Buzz Bar
46th
Happy Numbers
66th
Happy Numbers (Long)
39th
Kolakoski Sequence
80th
Leap Years
63rd
Leyland Numbers
35th
Look and Say
27th
Niven Numbers
113th
Pascal’s Triangle
68th
Pernicious Numbers
121st
Prime Numbers
55th
Quine
29th
Recamán
65th
Tongue-twisters
74th