12 Days of Christmas
663
Abundant Numbers
798
Abundant Numbers (Long)
905
Arithmetic Numbers
892
Divisors
771
Evil Numbers
574
Evil Numbers (Long)
572
Fibonacci
458
Fizz Buzz
403
Foo Fizz Buzz Bar
847
Leap Years
785
Medal Tally
524
Niven Numbers
481
Odious Numbers
573
Odious Numbers (Long)
565
Pernicious Numbers
439
Pernicious Numbers (Long)
527
Prime Numbers
673
Tongue-twisters
589