12 Days of Christmas
417
99 Bottles of Beer
382
Abundant Numbers
742
Abundant Numbers (Long)
833
Arabic to Roman
497
Arithmetic Numbers
750
Ascending Primes
235
Catalan Numbers
721
Collatz
770
Divisors
947
Evil Numbers (Long)
820
Fibonacci
947
Fizz Buzz
869
Happy Numbers
578
Happy Numbers (Long)
649
ISBN
504
Prime Numbers
714