12 Days of Christmas
386
Abundant Numbers
662
Abundant Numbers (Long)
683
Arabic to Roman
454
Arithmetic Numbers
625
Arrows
653
Ascending Primes
355
Christmas Trees
351
Collatz
733
Divisors
586
Evil Numbers
448
Evil Numbers (Long)
453
Fibonacci
362
Leap Years
449
Rock-paper-scissors-Spock-lizard
478