12 Days of Christmas
488
99 Bottles of Beer
654
Abundant Numbers
603
Christmas Trees
792
Cubes
478
Diamonds
462
Divisors
768
Emirp Numbers
374
Emojify
274
Evil Numbers
815
Fizz Buzz
775
Happy Numbers
452
Intersection
457
Leap Years
619
Leyland Numbers
311
Look and Say
619
Lucky Tickets
386
Morse Decoder
333
Morse Encoder
286
Niven Numbers
702
Odious Numbers
852
Ordinal Numbers
565
Pangram Grep
519
Pascal’s Triangle
616
Pernicious Numbers
843
Poker
778
Prime Numbers
565
Recamán
632
Rock-paper-scissors-Spock-lizard
460
Roman to Arabic
236
Rule 110
527
Seven Segment
592
Spelling Numbers
609
Tongue-twisters
377
United States
157