Abundant Numbers
17th
Abundant Numbers (Long)
3rd
Arithmetic Numbers
22nd
Catalan Numbers
22nd
Collatz
3rd
Divisors
43rd31st
Evil Numbers
35th
122nd
Evil Numbers (Long)
36th
Fibonacci
105th
Fizz Buzz
11th3rd
Foo Fizz Buzz Bar
18th
Happy Numbers
28th
Happy Numbers (Long)
15th
Leap Years
45th
Leyland Numbers
23rd
Niven Numbers
66th
Niven Numbers (Long)
31st
Odious Numbers
42nd18th463rd
Odious Numbers (Long)
32nd
Pascal’s Triangle
33rd43rd
Pernicious Numbers
43rd
Prime Numbers
41st
Prime Numbers (Long)
33rd
Recamán
20th
Smith Numbers
23rd
Sudoku
10th
Van Eck Sequence
17th