99 Bottles of Beer
619
Abundant Numbers
544
Arabic to Roman
382
Christmas Trees
669774
822
764
798
Divisors
605
766
650
Evil Numbers
661
732
621
Fibonacci
744
768894603
Fizz Buzz
334726
905599787
Happy Numbers
447
328
Leap Years
815
538888699774598
656
Niven Numbers
569
Ordinal Numbers
417
Pascal’s Triangle
417
Pernicious Numbers
575
639
481
Prime Numbers
554
483
912
Prime Numbers (Long)
971
Quine
572
Rock-paper-scissors-Spock-lizard
493
Roman to Arabic
477
United States
223
Van Eck Sequence
642