12 Days of Christmas
445
99 Bottles of Beer
622
Abundant Numbers
795
Abundant Numbers (Long)
879
Arabic to Roman
486
Arithmetic Numbers
884
Arrows
469
ASCII Table
497
Card Number Validation
507
Catalan Numbers
345
Christmas Trees
689
Collatz
558746
CSS Colors
68
Day of Week
536
Divisors
877
Emirp Numbers
359
Emirp Numbers (Long)
563
Emojify
226
Evil Numbers
748
Evil Numbers (Long)
821
Factorial Factorisation
584
Farey Sequence
559
Fibonacci
500
578
Fizz Buzz
791
Foo Fizz Buzz Bar
737
Fractions
616
Happy Numbers
363
Happy Numbers (Long)
601
Intersection
626
ISBN
639
Kaprekar Numbers
162
Kolakoski Constant
95
Kolakoski Sequence
256
Leap Years
717
Levenshtein Distance
385
Leyland Numbers
428
ln 2
387483
Minesweeper
363
Morse Encoder
134
N Queens
469
Niven Numbers
783
Niven Numbers (Long)
913
Number Spiral
315
Odious Numbers
752
Odious Numbers (Long)
840
Ordinal Numbers
670
Pangram Grep
651
Partition Numbers
543740
Pascal’s Triangle
607
Pernicious Numbers
567
Pernicious Numbers (Long)
725
Prime Numbers
776
Prime Numbers (Long)
904
Quine
821
Recamán
642
Reverse Polish Notation
453
Rijndael S-box
204
Roman to Arabic
417
ROT13
434
Set
540
Seven Segment
351
Smith Numbers
554
Tic-tac-toe
312
Time Distance
585
Tongue-twisters
383
Transpose Sentence
421
Trinomial Triangle
39
United States
95104
Vampire Numbers
355
Van Eck Sequence
552
π
68
τ
69
φ
600
√2
827
𝑒
408