12 Days of Christmas
394
Abundant Numbers
667
Abundant Numbers (Long)
691
Arabic to Roman
455
Arithmetic Numbers
636
Arrows
659
Ascending Primes
359
Christmas Trees
353
Collatz
738
Divisors
592
Evil Numbers
450
Evil Numbers (Long)
457
Fibonacci
364
Leap Years
451
Rock-paper-scissors-Spock-lizard
479