12 Days of Christmas
486
99 Bottles of Beer
456
Abundant Numbers
297
Christmas Trees
260
CSS Colors
134
Diamonds
208
Divisors
398
Emirp Numbers
Fibonacci
395
Fizz Buzz
421521407
Happy Numbers
215
Intersection
245
Leap Years
387
Morse Decoder
175
Morse Encoder
157
Niven Numbers
315
Prime Numbers
266
Seven Segment
173
Sierpiński Triangle
320
Tongue-twisters
539
United States
159