Abundant Numbers
17th
Abundant Numbers (Long)
3rd
Arithmetic Numbers
25th
Catalan Numbers
24th
Collatz
3rd
Divisors
43rd33rd
Evil Numbers
36th
135th
Evil Numbers (Long)
40th
Fibonacci
116th
Fizz Buzz
11th3rd
Foo Fizz Buzz Bar
18th
Happy Numbers
29th
Happy Numbers (Long)
17th
Leap Years
49th
Leyland Numbers
26th
Niven Numbers
73rd
Niven Numbers (Long)
36th
Odious Numbers
45th20th484th
Odious Numbers (Long)
34th
Pascal’s Triangle
35th46th
Pernicious Numbers
44th
Prime Numbers
41st
Prime Numbers (Long)
33rd
Recamán
21st
Smith Numbers
25th
Sudoku
11th
Van Eck Sequence
18th