12 Days of Christmas
868
Abundant Numbers
743678
Abundant Numbers (Long)
788746
Arithmetic Numbers
788
Catalan Numbers
679
Christmas Trees
581
Collatz
853
Divisors
890
Emirp Numbers
490
Emirp Numbers (Long)
544
Evil Numbers
818
Evil Numbers (Long)
799
Fibonacci
934
Fizz Buzz
945
Foo Fizz Buzz Bar
702909
Happy Numbers
453
Happy Numbers (Long)
517
Inventory Sequence
658
Kolakoski Constant
71
Kolakoski Sequence
334
Leap Years
847
Look and Say
636
Lucky Numbers
436
Niven Numbers
862941
Niven Numbers (Long)
660
Odious Numbers
783
Odious Numbers (Long)
766
Ordinal Numbers
572
Pangram Grep
753
Pascal’s Triangle
721
Pernicious Numbers
439
Pernicious Numbers (Long)
549
Prime Numbers
891
Prime Numbers (Long)
951
Recamán
764
Sierpiński Triangle
572
Tongue-twisters
595596
Van Eck Sequence
628