12 Days of Christmas
394
Abundant Numbers
667
Abundant Numbers (Long)
691
Arabic to Roman
455
Arithmetic Numbers
634
Arrows
658
Ascending Primes
363
Christmas Trees
353
Collatz
751
Divisors
592
Evil Numbers
450
Evil Numbers (Long)
456
Fibonacci
364
Leap Years
461
Rock-paper-scissors-Spock-lizard
480