12 Days of Christmas
733
Abundant Numbers (Long)
591303
478
Arrows
400
Christmas Trees
553
Collatz
680
CSS Colors
162
Divisors
560
Emojify
482
Fibonacci
845
Fizz Buzz
582822498
Leap Years
399
Rock-paper-scissors-Spock-lizard
461
Roman to Arabic
390
Seven Segment
304
Tongue-twisters
361
United States
149
π
196