12 Days of Christmas
380
99 Bottles of Beer
311
498
Abundant Numbers
731
Abundant Numbers (Long)
809
Arithmetic Numbers
765
Catalan Numbers
710
Christmas Trees
607
Collatz
760
Divisors
619
947
Emirp Numbers
524
Emirp Numbers (Long)
594
Evil Numbers
816
Evil Numbers (Long)
788
Farey Sequence
218
617
Fizz Buzz
898
Foo Fizz Buzz Bar
795
Fractions
602
Happy Numbers
500
Happy Numbers (Long)
622
ISBN
438
Kolakoski Sequence
612
Leap Years
782
Lucky Tickets
510
Niven Numbers
936
Niven Numbers (Long)
893
Number Spiral
208
Pangram Grep
792
Pascal’s Triangle
926
Pernicious Numbers
714
Pernicious Numbers (Long)
750
Prime Numbers
909
Prime Numbers (Long)
978
Quine
969
Reverse Polish Notation
598
Rule 110
411
391
Sierpiński Triangle
134
Tongue-twisters
282
Vampire Numbers
72
Van Eck Sequence
815
π
241
145
162