Abundant Numbers
8th
Abundant Numbers (Long)
2nd
Arithmetic Numbers
22nd
Catalan Numbers
20th
Collatz
26th
Divisors
43rd31st
Evil Numbers
34th
113th
Evil Numbers (Long)
34th
Fibonacci
103rd
Fizz Buzz
11th2nd
Foo Fizz Buzz Bar
28th
Happy Numbers
24th
Happy Numbers (Long)
15th
Leap Years
66th
Leyland Numbers
23rd
Niven Numbers
63rd
Niven Numbers (Long)
30th
Odious Numbers
41st17th447th
Odious Numbers (Long)
29th
Pascal’s Triangle
33rd39th
Pernicious Numbers
39th
Prime Numbers
39th
Prime Numbers (Long)
31st
Recamán
19th
Smith Numbers
22nd
Sudoku
9th
Van Eck Sequence
18th