12 Days of Christmas
624
99 Bottles of Beer
674
Abundant Numbers
712
Christmas Trees
794
Cubes
493
Diamonds
463
Divisors
769
Emirp Numbers
535
Emojify
389
Evil Numbers
816
Fizz Buzz
774
Happy Numbers
547
Intersection
447
Leap Years
622
Leyland Numbers
311
Look and Say
621
Lucky Tickets
389
Morse Decoder
337
Morse Encoder
298
Niven Numbers
721
Odious Numbers
853
Ordinal Numbers
565
Pangram Grep
520
Pascal’s Triangle
617
Pernicious Numbers
845
Poker
600
Prime Numbers
590
Recamán
632
Rock-paper-scissors-Spock-lizard
458
Roman to Arabic
238
Rule 110
532
Seven Segment
601
Spelling Numbers
609
Tongue-twisters
481
United States
157