12 Days of Christmas
408
99 Bottles of Beer
449
Abundant Numbers
700
Abundant Numbers (Long)
775
Arabic to Roman
461
Arithmetic Numbers
738
Arrows
583
Ascending Primes
431
ASCII Table
423
Card Number Validation
558
Catalan Numbers
587
Christmas Trees
600
Collatz
770
CSS Colors
236
Cubes
482
Day of Week
739
Divisors
711
Emirp Numbers
487
Emirp Numbers (Long)
553
Emojify
554
Evil Numbers
800
Evil Numbers (Long)
788
Factorial Factorisation
356
Farey Sequence
592
Fibonacci
857
Fizz Buzz
898
Foo Fizz Buzz Bar
795
Fractions
484
Happy Numbers
706
Happy Numbers (Long)
622
Hexdump
416
ISBN
514
Leap Years
827
Leyland Numbers
838
Lucky Numbers
584
Morse Decoder
416
Morse Encoder
516
Niven Numbers
786
Niven Numbers (Long)
862
Odious Numbers
800
Odious Numbers (Long)
788
Pangram Grep
744
Pernicious Numbers
727
Pernicious Numbers (Long)
773
Prime Numbers
769
Prime Numbers (Long)
657
Quine
373
Recamán
724
Roman to Arabic
673
ROT13
831
Seven Segment
460
Smith Numbers
411
Spelling Numbers
293
Tongue-twisters
414
Transpose Sentence
611
United States
399
Vampire Numbers
553
Van Eck Sequence
596
Zodiac Signs
525