12 Days of Christmas
668
99 Bottles of Beer
678
Abundant Numbers
726
Christmas Trees
804
Cubes
496
Diamonds
469
Divisors
778
Emirp Numbers
535
Emojify
385
Evil Numbers
814
Fizz Buzz
780
Happy Numbers
551
Intersection
527
Leap Years
694
Leyland Numbers
312
Look and Say
619
Lucky Tickets
386
Morse Decoder
341
Morse Encoder
300
Niven Numbers
729
Odious Numbers
853
Ordinal Numbers
568
Pangram Grep
526
Pascal’s Triangle
616
Pernicious Numbers
845
Poker
796
Prime Numbers
586
Recamán
639
Rock-paper-scissors-Spock-lizard
464
Roman to Arabic
242
Rule 110
534
Seven Segment
608
Spelling Numbers
603
Tongue-twisters
539
United States
175