12 Days of Christmas
394
Abundant Numbers
666
Abundant Numbers (Long)
689
Arabic to Roman
455
Arithmetic Numbers
633
Arrows
657
Ascending Primes
361
Christmas Trees
353
Collatz
749
Divisors
592
Evil Numbers
449
Evil Numbers (Long)
455
Fibonacci
364
Leap Years
461
Rock-paper-scissors-Spock-lizard
479