12 Days of Christmas
409
99 Bottles of Beer
379
Abundant Numbers
727
Abundant Numbers (Long)
808
Arabic to Roman
486
Arithmetic Numbers
715
Ascending Primes
226
Catalan Numbers
699
Collatz
753
Divisors
911
Evil Numbers (Long)
798
Fibonacci
932
Fizz Buzz
861
Happy Numbers
565
Happy Numbers (Long)
627
ISBN
487
Prime Numbers
700