12 Days of Christmas
906
99 Bottles of Beer
726
Abundant Numbers
772
Christmas Trees
685
Collatz
951
Divisors
905
Emirp Numbers
579
Evil Numbers
785
Fibonacci
911338
Fizz Buzz
812
Happy Numbers
698
Morse Decoder
468
Niven Numbers
866
Odious Numbers
783
Pangram Grep
Pascal’s Triangle
634
Pernicious Numbers
724
Prime Numbers
665
Quine
967946
Recamán
851
Roman to Arabic
620
Seven Segment
699
Sierpiński Triangle
685
Spelling Numbers
510
United States