12 Days of Christmas
415
99 Bottles of Beer
379
Abundant Numbers
730
Abundant Numbers (Long)
812
Arabic to Roman
486
Arithmetic Numbers
731
Ascending Primes
227
Catalan Numbers
702
Collatz
755
Divisors
933
Evil Numbers (Long)
799
Fibonacci
935
Fizz Buzz
862
Happy Numbers
568
Happy Numbers (Long)
630
ISBN
489
Prime Numbers
701