12 Days of Christmas
445
99 Bottles of Beer
625
Abundant Numbers
794
Abundant Numbers (Long)
877
Arabic to Roman
484
Arithmetic Numbers
882
Arrows
466
ASCII Table
475
Card Number Validation
507
Catalan Numbers
345
Christmas Trees
689
Collatz
557744
CSS Colors
68
Day of Week
535
Divisors
874
Emirp Numbers
332
Emirp Numbers (Long)
563
Emojify
226
Evil Numbers
747
Evil Numbers (Long)
820
Factorial Factorisation
587
Farey Sequence
517
Fibonacci
500
575
Fizz Buzz
790
Foo Fizz Buzz Bar
737
Fractions
616
Happy Numbers
363
Happy Numbers (Long)
591
Intersection
624
ISBN
622
Kaprekar Numbers
162
Kolakoski Constant
95
Kolakoski Sequence
228
Leap Years
717
Levenshtein Distance
378
Leyland Numbers
414
ln 2
398482
Morse Encoder
128
N Queens
468
Niven Numbers
783
Niven Numbers (Long)
913
Number Spiral
308
Odious Numbers
749
Odious Numbers (Long)
839
Ordinal Numbers
670
Pangram Grep
650
Partition Numbers
443740
Pascal’s Triangle
607
Pernicious Numbers
565
Pernicious Numbers (Long)
725
Prime Numbers
776
Prime Numbers (Long)
904
Quine
825
Recamán
640
Reverse Polish Notation
449
Rijndael S-box
203
Roman to Arabic
416
ROT13
432
Set
543
Seven Segment
351
Smith Numbers
554
Tic-tac-toe
312
Time Distance
583
Tongue-twisters
344
Transpose Sentence
429
Trinomial Triangle
41
United States
95104
Vampire Numbers
343
Van Eck Sequence
552
π
68
τ
69
φ
600
√2
797
𝑒
407