12 Days of Christmas
400
Abundant Numbers
735651
Abundant Numbers (Long)
779662
Arithmetic Numbers
682
Catalan Numbers
679
Christmas Trees
506
Collatz
716
Divisors
844
Emirp Numbers
397
Emirp Numbers (Long)
453
Evil Numbers
818
Evil Numbers (Long)
799
Fibonacci
935
Fizz Buzz
862
Foo Fizz Buzz Bar
699722
Happy Numbers
351
Happy Numbers (Long)
439
Inventory Sequence
623
Kolakoski Constant
60
Kolakoski Sequence
328
Leap Years
847
Look and Say
518
Lucky Numbers
421
Niven Numbers
859938
Niven Numbers (Long)
659
Odious Numbers
783
Odious Numbers (Long)
766
Ordinal Numbers
466
Pangram Grep
639
Pascal’s Triangle
668
Pernicious Numbers
439
Pernicious Numbers (Long)
539
Prime Numbers
892
Prime Numbers (Long)
951
Recamán
689
Sierpiński Triangle
535
Tongue-twisters
398331
Van Eck Sequence
595