Abundant Numbers
33rd
Abundant Numbers (Long)
31st
Collatz
55th
Divisors
94th
Evil Numbers
103rd
Evil Numbers (Long)
61st
Fibonacci
173rd
Fizz Buzz
31st
Kolakoski Sequence
48th
Leap Years
194th
Lucky Numbers
25th
Niven Numbers
128th
Odious Numbers
74th
Pernicious Numbers
78th
Prime Numbers
132nd
Quine
64th
RecamΓ‘n
39th
Rule 110
41st