12 Days of Christmas
662
99 Bottles of Beer
650
Abundant Numbers
730
Abundant Numbers (Long)
812
Arithmetic Numbers
808
Arrows
388
Ascending Primes
252
ASCII Table
222
Christmas Trees
259
Collatz
846
CSS Colors
169
Cubes
154
Divisors
794
Emirp Numbers
546
Emojify
368
Evil Numbers
586
Evil Numbers (Long)
470
Fibonacci
646
Fizz Buzz
730
Foo Fizz Buzz Bar
714
Happy Numbers
548
ISBN
626
Leap Years
718
Leyland Numbers
764
Look and Say
101
Niven Numbers
708
Niven Numbers (Long)
786
Number Spiral
405
Odious Numbers
472
Odious Numbers (Long)
474
Prime Numbers
586
Sierpiński Triangle
373
Spelling Numbers
354
Tongue-twisters
583