Abundant Numbers
10th
Abundant Numbers (Long)
2nd
Arithmetic Numbers
28th
Catalan Numbers
30th
Collatz
34th
Divisors
46th35th
Evil Numbers
41st
161st
Evil Numbers (Long)
48th
Fibonacci
126th
Fizz Buzz
11th3rd
Foo Fizz Buzz Bar
31st
Happy Numbers
28th
Happy Numbers (Long)
19th
Leap Years
77th
Leyland Numbers
28th
Niven Numbers
81st
Niven Numbers (Long)
44th
Odious Numbers
56th25th518th
Odious Numbers (Long)
43rd
Pascal’s Triangle
41st55th
Pernicious Numbers
54th
Prime Numbers
48th
Prime Numbers (Long)
40th
Recamán
22nd
Semiprime Numbers
5th
Smith Numbers
26th
Sudoku
10th
Van Eck Sequence
20th