12 Days of Christmas
136th
Collatz
59th
Divisors
134th
Evil Numbers
263rd
Fibonacci
332nd
Fizz Buzz
1st
Foo Fizz Buzz Bar
47th
Happy Numbers
66th
Happy Numbers (Long)
39th
Kolakoski Sequence
82nd
Leap Years
65th
Leyland Numbers
35th
Look and Say
27th
Niven Numbers
116th
Pascal’s Triangle
70th
Pernicious Numbers
122nd
Prime Numbers
56th
Quine
29th
Recamán
65th
Tongue-twisters
75th