12 Days of Christmas
906
99 Bottles of Beer
667
Abundant Numbers
773
Abundant Numbers (Long)
924
Arabic to Roman
701
Arithmetic Numbers
857
Ascending Primes
267
Catalan Numbers
721
Collatz
851
Divisors
1,000
Evil Numbers (Long)
820
Fibonacci
947
Fizz Buzz
951
Happy Numbers
697
Happy Numbers (Long)
766
ISBN
645
Prime Numbers
714