99 Bottles of Beer
205
Abundant Numbers
678
Arabic to Roman
401
Catalan Numbers
602
Christmas Trees
610
Divisors
604
Emirp Numbers
400
Evil Numbers
713
Fibonacci
910
Fizz Buzz
891
Foo Fizz Buzz Bar
783
Fractions
469
Happy Numbers
428
Happy Numbers (Long)
533
Kolakoski Sequence
619
Leap Years
799
Leyland Numbers
559
Niven Numbers
846
Number Spiral
201
Odious Numbers
712
Ordinal Numbers
387
Pangram Grep
Pascal’s Triangle
508
Pernicious Numbers
592
Prime Numbers
643
Prime Numbers (Long)
679
Quine
946
Recamán
632
Roman to Arabic
298
Sierpiński Triangle
594
Smith Numbers
501
Spelling Numbers
212
Tongue-twisters
342
Van Eck Sequence
310