12 Days of Christmas
404
Abundant Numbers
709
Abundant Numbers (Long)
778
Christmas Trees
577
Collatz
621
Divisors
665
Evil Numbers
786
Evil Numbers (Long)
769
Fibonacci
789
Fizz Buzz
891
Foo Fizz Buzz Bar
784
Leap Years
573
Niven Numbers
697
Niven Numbers (Long)
774
Odious Numbers
769
Odious Numbers (Long)
767
Prime Numbers
553
Prime Numbers (Long)
595