12 Days of Christmas
487
99 Bottles of Beer
461
Abundant Numbers
296
Christmas Trees
259
CSS Colors
134
Diamonds
207
Divisors
395
Emirp Numbers
Fibonacci
395
Fizz Buzz
421366406
Happy Numbers
214
Intersection
244
Leap Years
388
Morse Decoder
174
Morse Encoder
156
Niven Numbers
315
Prime Numbers
267
Seven Segment
171
Sierpiński Triangle
318
Tongue-twisters
540
United States
159