12 Days of Christmas
814Abundant Numbers
776Arabic to Roman
620Christmas Trees
791Cubes
516Diamonds
644Divisors
1,000Emirp Numbers
613Evil Numbers
874
1,000Fibonacci
870
973Fizz Buzz
983Happy Numbers
729Leap Years
827Morse Decoder
604Morse Encoder
636Niven Numbers
963
978Odious Numbers
883
1,000Ordinal Numbers
931Pangram Grep
774Pascal’s Triangle
964Pernicious Numbers
615Prime Numbers
889Quine
969Rock-paper-scissors-Spock-lizard
687Roman to Arabic
458Rule 110
387Seven Segment
730Sierpiński Triangle
744Spelling Numbers
383United States
449φ
716√2
721