Abundant Numbers
8th
Abundant Numbers (Long)
2nd
Arithmetic Numbers
24th
Catalan Numbers
23rd
Collatz
29th
Divisors
43rd31st
Evil Numbers
36th
130th
Evil Numbers (Long)
39th
Fibonacci
111th
Fizz Buzz
11th3rd
Foo Fizz Buzz Bar
28th
Happy Numbers
25th
Happy Numbers (Long)
15th
Leap Years
69th
Leyland Numbers
26th
Niven Numbers
70th
Niven Numbers (Long)
33rd
Odious Numbers
45th18th475th
Odious Numbers (Long)
34th
Pascal’s Triangle
35th46th
Pernicious Numbers
44th
Prime Numbers
41st
Prime Numbers (Long)
34th
Recamán
20th
Smith Numbers
26th
Sudoku
9th
Van Eck Sequence
18th