12 Days of Christmas
837
99 Bottles of Beer
599
Abundant Numbers
732
ASCII Table
547
Christmas Trees
680
CSS Colors
417
Evil Numbers
727
Fibonacci
493
Fizz Buzz
479
ISBN
641
Leap Years
729
Look and Say
565
Morse Encoder
443
Niven Numbers
746
Odious Numbers
625
Pangram Grep
783
Pernicious Numbers
426
Prime Numbers
645
Reverse Polish Notation
645
Rock-paper-scissors-Spock-lizard
722
Spelling Numbers
288
Tongue-twisters
557
United States
263
Vampire Numbers
65
Van Eck Sequence
471