12 Days of Christmas
278
99 Bottles of Beer
280
Abundant Numbers
721
Abundant Numbers (Long)
797
Arabic to Roman
423
Arithmetic Numbers
689
Card Number Validation
489
Catalan Numbers
863
Christmas Trees
621
Collatz
478
760
Diamonds
311
Divisors
711
Emirp Numbers
462
Emirp Numbers (Long)
525
Emojify
269
Evil Numbers
870
Evil Numbers (Long)
854
Farey Sequence
453
Fibonacci
441
947
Fizz Buzz
707
Foo Fizz Buzz Bar
520
Fractions
653
Happy Numbers
505
Happy Numbers (Long)
642
ISBN
401
Kolakoski Sequence
448
Leap Years
741
Leyland Numbers
653
Look and Say
429
Lucky Numbers
530
Morse Encoder
242
Niven Numbers
800
Niven Numbers (Long)
909
Odious Numbers
870
Odious Numbers (Long)
854
Ordinal Numbers
393
Pangram Grep
587
Pascal’s Triangle
568
Pernicious Numbers
702
Pernicious Numbers (Long)
750
Prime Numbers
667
Prime Numbers (Long)
721
Quine
969
Recamán
679
Rock-paper-scissors-Spock-lizard
410
Roman to Arabic
404
Time Distance
346
Van Eck Sequence
333
π
408
√2
398