12 Days of Christmas
372
Abundant Numbers
718
Arabic to Roman
429
Christmas Trees
617
Cubes
373
Diamonds
527
Divisors
932
Emirp Numbers
857
Evil Numbers
808
981
Fibonacci
833
960
Fizz Buzz
891
Happy Numbers
554
Leap Years
864
Morse Decoder
412
Morse Encoder
439
Niven Numbers
899
959
Odious Numbers
821
979
Ordinal Numbers
738
Pangram Grep
638
Pascal’s Triangle
870
Pernicious Numbers
698
Prime Numbers
871
Quine
946
Rock-paper-scissors-Spock-lizard
461
Roman to Arabic
335
Rule 110
342
Seven Segment
520
Sierpiński Triangle
696
Spelling Numbers
216
United States
333
φ
682
√2
704