Abundant Numbers
16th
Abundant Numbers (Long)
3rd
Catalan Numbers
16th
Collatz
3rd
Divisors
35th
30th
Evil Numbers
32nd
98thEvil Numbers (Long)
25th
Fibonacci
90th
Fizz Buzz
9th
1st
Foo Fizz Buzz Bar
13th
Happy Numbers
24th
Happy Numbers (Long)
14th
Leap Years
43rd
Leyland Numbers
20th
Niven Numbers
60th
Niven Numbers (Long)
24th
Odious Numbers
35th
16th
384thOdious Numbers (Long)
22nd
Pascal’s Triangle
29th
32nd
Pernicious Numbers
34th
Prime Numbers
37th
Prime Numbers (Long)
29th
Recamán
16th
Smith Numbers
20th
Sudoku
9th
Van Eck Sequence
15th