12 Days of Christmas
792
99 Bottles of Beer
667
Abundant Numbers
630
Abundant Numbers (Long)
775
Arithmetic Numbers
752
Arrows
305
Ascending Primes
129
ASCII Table
285
Christmas Trees
172
Collatz
840
CSS Colors
205
Cubes
120
Divisors
687
Emirp Numbers
453
Emojify
294
Evil Numbers
476
Evil Numbers (Long)
345
Fibonacci
600
Fizz Buzz
624
Foo Fizz Buzz Bar
634
Happy Numbers
512
ISBN
538
Leap Years
642
Leyland Numbers
676
Look and Say
67
Niven Numbers
611
Niven Numbers (Long)
676
Number Spiral
252
Odious Numbers
348
Odious Numbers (Long)
350
Prime Numbers
482
Sierpiński Triangle
249
Spelling Numbers
340
Tongue-twisters
586