12 Days of Christmas
868
99 Bottles of Beer
698
Abundant Numbers
754
Abundant Numbers (Long)
846
Arabic to Roman
411
Arithmetic Numbers
840
Arrows
416
Ascending Primes
314
ASCII Table
388
Card Number Validation
604
Catalan Numbers
506
Christmas Trees
771
Collatz
877
CSS Colors
176
Cubes
608
Day of Week
648
Diamonds
459
Divisors
831
Emirp Numbers
618
Emirp Numbers (Long)
643
Emojify
385
Evil Numbers
597
Evil Numbers (Long)
612
Factorial Factorisation
342
Fibonacci
667
Fizz Buzz
736
Foo Fizz Buzz Bar
742
Fractions
721
Happy Numbers
649
Happy Numbers (Long)
555
ISBN
664
Leap Years
729
Leyland Numbers
861
Look and Say
645
Lucky Numbers
584
Mandelbrot
355
Medal Tally
552
Morse Decoder
338
Morse Encoder
344
Niven Numbers
721
Niven Numbers (Long)
806
Number Spiral
419
Odious Numbers
580
Odious Numbers (Long)
612
Ordinal Numbers
695
Pangram Grep
629
Partition Numbers
190
Pascal’s Triangle
641
Pernicious Numbers
615
Pernicious Numbers (Long)
680
Prime Numbers
615
Prime Numbers (Long)
667
Recamán
786
Rijndael S-box
284
Rock-paper-scissors-Spock-lizard
414
ROT13
532
Scrambled Sort
854
Seven Segment
574
Sierpiński Triangle
400
Spelling Numbers
372
Tic-tac-toe
407
Time Distance
445
Tongue-twisters
738
United States
325
Vampire Numbers
190
Van Eck Sequence
596
Zeckendorf Representation
659
Zodiac Signs
355