Abundant Numbers
33rd
Abundant Numbers (Long)
32nd
Collatz
64th
Divisors
101st
Evil Numbers
107th
Evil Numbers (Long)
63rd
Fibonacci
178th
Fizz Buzz
31st
Kolakoski Sequence
49th
Leap Years
199th
Lucky Numbers
25th
Niven Numbers
136th
Odious Numbers
79th
Pernicious Numbers
86th
Prime Numbers
138th
Quine
67th
Recamán
43rd
Rule 110
44th