12 Days of Christmas
375
Abundant Numbers
731
Arabic to Roman
440
Christmas Trees
628
Cubes
379
Diamonds
538
Divisors
947
Emirp Numbers
873
Evil Numbers
8651,000
Fibonacci
870973
Fizz Buzz
898
Happy Numbers
565
Leap Years
878
Morse Decoder
419
Morse Encoder
448
Niven Numbers
963978
Odious Numbers
8831,000
Ordinal Numbers
759
Pangram Grep
656
Pascal’s Triangle
893
Pernicious Numbers
714
Prime Numbers
889
Quine
969
Rock-paper-scissors-Spock-lizard
468
Roman to Arabic
346
Rule 110
349
Seven Segment
533
Sierpiński Triangle
711
Spelling Numbers
224
United States
320
φ
703
√2
721