12 Days of Christmas
733
Abundant Numbers (Long)
593305
479
Arrows
401
Christmas Trees
553
Collatz
681
CSS Colors
203
Divisors
560
Emojify
483
Fibonacci
846
Fizz Buzz
583822483
Leap Years
400
Rock-paper-scissors-Spock-lizard
461
Roman to Arabic
390
Seven Segment
304
Tongue-twisters
357
United States
144
π
196