12 Days of Christmas
753
Abundant Numbers
686
Abundant Numbers (Long)
718
Arabic to Roman
497
Arithmetic Numbers
659
Arrows
494
Ascending Primes
386
Christmas Trees
365
Collatz
775
Divisors
605
Evil Numbers
463
Evil Numbers (Long)
476
Fibonacci
371
Leap Years
471
Rock-paper-scissors-Spock-lizard
609