12 Days of Christmas
868
99 Bottles of Beer
698
Abundant Numbers
754
Abundant Numbers (Long)
846
Arabic to Roman
471
Arithmetic Numbers
840
Arrows
416
Ascending Primes
321
ASCII Table
575
Card Number Validation
620
Catalan Numbers
506
Christmas Trees
771
Collatz
877
CSS Colors
176
Cubes
608
Day of Week
648
Diamonds
459
Divisors
844
Emirp Numbers
632
Emirp Numbers (Long)
643
Emojify
385
Evil Numbers
606
Evil Numbers (Long)
631
Factorial Factorisation
380
Fibonacci
667
Fizz Buzz
736
Foo Fizz Buzz Bar
742
Fractions
747
Happy Numbers
649
Happy Numbers (Long)
685
ISBN
835
Kaprekar Numbers
400
Leap Years
729
Leyland Numbers
861
Look and Say
645
Lucky Numbers
584
Mandelbrot
355
Medal Tally
552
Morse Decoder
345
Morse Encoder
352
Niven Numbers
721
Niven Numbers (Long)
806
Number Spiral
419
Odious Numbers
645
Odious Numbers (Long)
631
Ordinal Numbers
695
Pangram Grep
709
Partition Numbers
336
Pascal’s Triangle
641
Pernicious Numbers
615
Pernicious Numbers (Long)
680
Prime Numbers
615
Prime Numbers (Long)
677
Recamán
786
Rijndael S-box
284
Rock-paper-scissors-Spock-lizard
558
ROT13
532
Scrambled Sort
864
Seven Segment
574
SI Units
415
Sierpiński Triangle
462
Spelling Numbers
372
Tic-tac-toe
462
Time Distance
483
Tongue-twisters
738
United States
325
Vampire Numbers
190
Van Eck Sequence
869
Zeckendorf Representation
659
Zodiac Signs
385
π
97