Abundant Numbers
17th
Abundant Numbers (Long)
3rd
Arithmetic Numbers
24th
Catalan Numbers
19th
Collatz
3rd
Divisors
42nd31st
Evil Numbers
34th
111th
Evil Numbers (Long)
34th
Fibonacci
103rd
Fizz Buzz
11th1st
Foo Fizz Buzz Bar
16th
Happy Numbers
27th
Happy Numbers (Long)
15th
Leap Years
45th
Leyland Numbers
22nd
Niven Numbers
62nd
Niven Numbers (Long)
27th
Odious Numbers
41st17th434th
Odious Numbers (Long)
29th
Pascal’s Triangle
33rd38th
Pernicious Numbers
38th
Prime Numbers
39th
Prime Numbers (Long)
30th
Recamán
19th
Smith Numbers
22nd
Sudoku
10th
Van Eck Sequence
17th