Abundant Numbers
14th
Arithmetic Numbers
7th
Catalan Numbers
16th
Divisors
44th
Evil Numbers
24th
Evil Numbers (Long)
18th
Fibonacci
23rd
Fizz Buzz
14th
Foo Fizz Buzz Bar
12th
Happy Numbers
16th
Happy Numbers (Long)
12th
Leap Years
15th
Leyland Numbers
20th
Niven Numbers
5th
Niven Numbers (Long)
9th
Odious Numbers
1st
Odious Numbers (Long)
21st
Pascalβs Triangle
41st
Pernicious Numbers
25th
Prime Numbers
67th
Prime Numbers (Long)
57th
Smith Numbers
3rd