12 Days of Christmas
489
99 Bottles of Beer
656
Abundant Numbers
612
Christmas Trees
802
Cubes
480
Diamonds
469
Divisors
782
Emirp Numbers
379
Emojify
280
Evil Numbers
821
Fizz Buzz
778
Happy Numbers
460
Intersection
467
Leap Years
626
Leyland Numbers
317
Look and Say
628
Lucky Tickets
392
Morse Decoder
335
Morse Encoder
291
Niven Numbers
713
Odious Numbers
861
Ordinal Numbers
567
Pangram Grep
528
Pascal’s Triangle
619
Pernicious Numbers
852
Poker
792
Prime Numbers
568
Recamán
643
Rock-paper-scissors-Spock-lizard
463
Roman to Arabic
240
Rule 110
539
Seven Segment
603
Spelling Numbers
612
Tongue-twisters
377
United States
157