12 Days of Christmas
817
99 Bottles of Beer
715
Abundant Numbers
646
Abundant Numbers (Long)
775
Arabic to Roman
329
Arithmetic Numbers
737
Arrows
329
Ascending Primes
209
ASCII Table
285
Card Number Validation
485
Catalan Numbers
358
Christmas Trees
697
Collatz
850
CSS Colors
205
Cubes
526
Day of Week
535
Diamonds
231
Divisors
722
Emirp Numbers
531
Emirp Numbers (Long)
521
Emojify
303
Evil Numbers
476
Evil Numbers (Long)
456
Factorial Factorisation
248
Fibonacci
632
Fizz Buzz
674
Foo Fizz Buzz Bar
680
Fractions
598
Happy Numbers
633
Happy Numbers (Long)
434
ISBN
572
Leap Years
642
Leyland Numbers
811
Look and Say
544
Lucky Numbers
422
Mandelbrot
288
Medal Tally
506
Morse Decoder
271
Morse Encoder
279
Niven Numbers
611
Niven Numbers (Long)
676
Number Spiral
252
Odious Numbers
460
Odious Numbers (Long)
456
Ordinal Numbers
583
Pangram Grep
503
Partition Numbers
84
Pascal’s Triangle
514
Pernicious Numbers
506
Pernicious Numbers (Long)
525
Prime Numbers
506
Prime Numbers (Long)
537
Recamán
685
Rijndael S-box
161
Rock-paper-scissors-Spock-lizard
407
ROT13
345
Scrambled Sort
789
Seven Segment
536
Sierpiński Triangle
269
Spelling Numbers
345
Tic-tac-toe
307
Time Distance
440
Tongue-twisters
632
United States
248
Vampire Numbers
98
Van Eck Sequence
438
Zeckendorf Representation
605
Zodiac Signs
288