12 Days of Christmas
669
99 Bottles of Beer
680
Abundant Numbers
727
Christmas Trees
805
Cubes
497
Diamonds
470
Divisors
780
Emirp Numbers
537
Emojify
387
Evil Numbers
817
Fizz Buzz
781
Happy Numbers
554
Intersection
526
Leap Years
696
Leyland Numbers
315
Look and Say
622
Lucky Tickets
388
Morse Decoder
343
Morse Encoder
302
Niven Numbers
733
Odious Numbers
855
Ordinal Numbers
568
Pangram Grep
527
Pascal’s Triangle
617
Pernicious Numbers
848
Poker
796
Prime Numbers
588
Recamán
640
Rock-paper-scissors-Spock-lizard
466
Roman to Arabic
242
Rule 110
538
Seven Segment
608
Spelling Numbers
606
Tongue-twisters
502
United States
176