Arithmetic Numbers
257th
Collatz
392nd
Evil Numbers
243rd
Evil Numbers (Long)
153rd
Factorial Factorisation
55th
Fizz Buzz
53rd
Foo Fizz Buzz Bar
1st
Fractions
161st
Happy Numbers
518th
Leap Years
497th
Lucky Numbers
154th
Odious Numbers
135th
Prime Numbers
420th
Prime Numbers (Long)
190th
Tic-tac-toe
68th