Abundant Numbers
563rd
Abundant Numbers (Long)
398th
Arrows
74th
Collatz
33rd
Divisors
1,119th
Emirp Numbers
218th
Emirp Numbers (Long)
204th
Evil Numbers
665th
Evil Numbers (Long)
292nd
Factorial Factorisation
163rd
Fizz Buzz
2,267th
Foo Fizz Buzz Bar
706th
Happy Numbers
159th
Happy Numbers (Long)
358th
Leap Years
1,081st
Niven Numbers
463rd
Odious Numbers
490th
Odious Numbers (Long)
230th
Pernicious Numbers
174th
Prime Numbers
437th
Prime Numbers (Long)
281st
Quine
633rd
Sierpiński Triangle
319th
Tongue-twisters
79th