Abundant Numbers
67th
Abundant Numbers (Long)
52nd
Arithmetic Numbers
32nd
Diamonds
38th
Divisors
71st
Evil Numbers
49th
Evil Numbers (Long)
36th
Fizz Buzz
3rd
Fractions
20th
Game of Life
21st
ISBN
50th
Odious Numbers
43rd
Odious Numbers (Long)
33rd
PalindromemordnilaP
11th
Pernicious Numbers
57th
Prime Numbers
86th
Prime Numbers (Long)
58th
Quine
119th
Recamán
20th
Tongue-twisters
35th