12 Days of Christmas
507
99 Bottles of Beer
474
Abundant Numbers
299
Christmas Trees
263
CSS Colors
197
Diamonds
211
Divisors
399
Emirp Numbers
Fibonacci
397
Fizz Buzz
423367408
Happy Numbers
216
Intersection
249
Leap Years
390
Morse Decoder
144
Morse Encoder
128
Niven Numbers
318
Prime Numbers
266
Seven Segment
176
Sierpiński Triangle
268
Tongue-twisters
562
United States
161