12 Days of Christmas
780
99 Bottles of Beer
490
Abundant Numbers
400
Abundant Numbers (Long)
432
Arithmetic Numbers
417
Arrows
172
brainfuck
512
Card Number Validation
439
Collatz
509
CSS Colors
188
Day of Week
639
Divisors
527
Emirp Numbers
369
Emirp Numbers (Long)
387
Evil Numbers
281
Evil Numbers (Long)
287
Fibonacci
415
Fizz Buzz
957
Foo Fizz Buzz Bar
824
Forsyth–Edwards Notation
388
Fractions
593
Happy Numbers
377
Happy Numbers (Long)
371
ISBN
482
Leap Years
638
Look and Say
388
Lucky Numbers
352
Morse Decoder
108
Morse Encoder
122
Niven Numbers
363
Niven Numbers (Long)
419
Odious Numbers
280
Odious Numbers (Long)
286
Pernicious Numbers
185
ROT13
516
United States
164
Zeckendorf Representation
311
π
506