99 Bottles of Beer
619
Abundant Numbers
543
Arabic to Roman
382
Christmas Trees
668774
822
764
837
Divisors
605
766
650
Evil Numbers
661
732
620
Fibonacci
744
768893602
Fizz Buzz
334725
905599787
Happy Numbers
447
327
Leap Years
815
538888698774598
656
Niven Numbers
568
Ordinal Numbers
416
Pascal’s Triangle
417
Pernicious Numbers
575
639
481
Prime Numbers
554
482
912
Prime Numbers (Long)
971
Quine
572
Rock-paper-scissors-Spock-lizard
493
Roman to Arabic
477
United States
223
Van Eck Sequence
642