12 Days of Christmas
733
99 Bottles of Beer
644
Abundant Numbers
718
Abundant Numbers (Long)
839
Arabic to Roman
292
Arithmetic Numbers
709
Arrows
399
Card Number Validation
429
Catalan Numbers
691
Christmas Trees
593
Collatz
754
Diamonds
357
Divisors
748
Emirp Numbers
547
Emirp Numbers (Long)
619
Evil Numbers
727
Evil Numbers (Long)
714
Farey Sequence
509
Fibonacci
789
Fizz Buzz
613
Foo Fizz Buzz Bar
577
Fractions
502
Happy Numbers
607
Intersection
791
ISBN
669
Leap Years
642
Leyland Numbers
676
Lucky Numbers
445
Morse Encoder
211
Niven Numbers
699
Niven Numbers (Long)
764
Odious Numbers
740
Odious Numbers (Long)
739
Ordinal Numbers
560
Pangram Grep
674
Pascal’s Triangle
384
Pernicious Numbers
663
Prime Numbers
623
Prime Numbers (Long)
579
Recamán
719
Rijndael S-box
157
Roman to Arabic
285
Scrambled Sort
685
Seven Segment
364
Sierpiński Triangle
98
Smith Numbers
727
Sudoku
262
Ten-pin Bowling
229
Tongue-twisters
609
United States
148
Vampire Numbers
569
Van Eck Sequence
668
√2
633