12 Days of Christmas
817
99 Bottles of Beer
647
Abundant Numbers
779
Arithmetic Numbers
838
ASCII Table
666
Card Number Validation
446
Christmas Trees
510
Collatz
697
750785840
Cubes
487
Diamonds
345
Divisors
772
Evil Numbers
545
Factorial Factorisation
548
Farey Sequence
625
Fibonacci
864
846
Fizz Buzz
761
834
Foo Fizz Buzz Bar
617675827
Fractions
535
Gray Code Decoder
577
706
Gray Code Encoder
758
Happy Numbers
424
Intersection
468
Inventory Sequence
305
ISBN
572
Kaprekar Numbers
669
Kolakoski Sequence
618578624
Leap Years
619
Leyland Numbers
719
Look and Say
526
Lucky Numbers
500
Niven Numbers
550
Odious Numbers
490
Ordinal Numbers
439
PalindromemordnilaP
582
Pangram Grep
583
Pascal’s Triangle
688
Pernicious Numbers
344
Prime Numbers
870
Recamán
789
730
Seven Segment
573
Sierpiński Triangle
334
Smith Numbers
551
Transpose Sentence
540
Trinomial Triangle
713
Ulam Sequence
778
United States
155
Van Eck Sequence
692