12 Days of Christmas
406
99 Bottles of Beer
445
Abundant Numbers
688
Abundant Numbers (Long)
755
Arabic to Roman
434
Arithmetic Numbers
732
Arrows
568
Ascending Primes
416
ASCII Table
415
Card Number Validation
537
Catalan Numbers
571
Christmas Trees
590
Collatz
755
CSS Colors
227
Cubes
475
Day of Week
711
Divisors
700
Emirp Numbers
478
Emirp Numbers (Long)
537
Emojify
545
Evil Numbers
785
Evil Numbers (Long)
769
Factorial Factorisation
347
Farey Sequence
572
Fibonacci
846
Fizz Buzz
891
Foo Fizz Buzz Bar
783
Fractions
470
Happy Numbers
693
Happy Numbers (Long)
605
Hexdump
405
ISBN
499
Leap Years
770
Leyland Numbers
816
Lucky Numbers
568
Morse Decoder
408
Morse Encoder
507
Niven Numbers
771
Niven Numbers (Long)
841
Odious Numbers
784
Odious Numbers (Long)
767
Pangram Grep
725
Pernicious Numbers
711
Pernicious Numbers (Long)
522
Prime Numbers
755
Prime Numbers (Long)
639
Quine
365
Recamán
708
Roman to Arabic
575
ROT13
796
Seven Segment
450
Smith Numbers
399
Tongue-twisters
410
Transpose Sentence
581
United States
386
Vampire Numbers
539
Van Eck Sequence
575
Zodiac Signs
503