12 Days of Christmas
402
Abundant Numbers
779
662
Abundant Numbers (Long)
842
679
Arithmetic Numbers
689
Catalan Numbers
698
Christmas Trees
514
Collatz
731
Divisors
857
Emirp Numbers
404
Emirp Numbers (Long)
467
Evil Numbers
833
Evil Numbers (Long)
820
Fibonacci
947
Fizz Buzz
869
Foo Fizz Buzz Bar
740
733
Happy Numbers
358
Happy Numbers (Long)
452
Inventory Sequence
646
Kolakoski Constant
62
Kolakoski Sequence
347
Leap Years
860
Look and Say
531
Lucky Numbers
442
Niven Numbers
920
957
Niven Numbers (Long)
676
Odious Numbers
800
Odious Numbers (Long)
788
Ordinal Numbers
478
Pangram Grep
656
Pascal’s Triangle
685
Pernicious Numbers
449
Pernicious Numbers (Long)
554
Prime Numbers
909
Prime Numbers (Long)
978
Recamán
705
Sierpiński Triangle
545
Tongue-twisters
417
338
Van Eck Sequence
616