12 Days of Christmas
555
99 Bottles of Beer
235
Abundant Numbers
708
Catalan Numbers
332
Catalan’s Constant
70
Christmas Trees
522
Collatz
465
CSS Colors
179
Diamonds
352
Divisors
863
Emojify
294
Evil Numbers (Long)
755
Fizz Buzz
977
Foo Fizz Buzz Bar
861630
Fractions
437
Leap Years
684
Ordinal Numbers
687
Prime Numbers
633
Prime Numbers (Long)
649
Tongue-twisters
679