12 Days of Christmas
787
99 Bottles of Beer
663
Abundant Numbers
620
Abundant Numbers (Long)
756
Arithmetic Numbers
731
Arrows
297
Ascending Primes
124
ASCII Table
281
Christmas Trees
169
Collatz
822
CSS Colors
196
Cubes
118
Divisors
676
Emirp Numbers
444
Emojify
288
Evil Numbers
467
Evil Numbers (Long)
336
Fibonacci
592
Fizz Buzz
620
Foo Fizz Buzz Bar
625
Happy Numbers
502
ISBN
522
Leap Years
633
Leyland Numbers
657
Look and Say
65
Niven Numbers
601
Niven Numbers (Long)
660
Number Spiral
243
Odious Numbers
341
Odious Numbers (Long)
341
Prime Numbers
473
Sierpiński Triangle
244
Spelling Numbers
325
Tongue-twisters
583