12 Days of Christmas
506
99 Bottles of Beer
471
Abundant Numbers
298
Christmas Trees
261
CSS Colors
196
Diamonds
209
Divisors
398
Emirp Numbers
Fibonacci
395
Fizz Buzz
423522408
Happy Numbers
215
Intersection
245
Leap Years
388
Morse Decoder
143
Morse Encoder
128
Niven Numbers
317
Prime Numbers
266
Seven Segment
175
Sierpiński Triangle
267
Tongue-twisters
561
United States
161