12 Days of Christmas
344
99 Bottles of Beer
341
Abundant Numbers
623
Arrows
374
Collatz
656
Emirp Numbers
362347
Evil Numbers (Long)
643
Fizz Buzz
673494
Foo Fizz Buzz Bar
597
Leap Years
639687750615728
Niven Numbers (Long)
805
Prime Numbers
577
Rock-paper-scissors-Spock-lizard
348
Sierpiński Triangle
129