12 Days of Christmas
788
99 Bottles of Beer
657
Abundant Numbers
828
Abundant Numbers (Long)
883
Arabic to Roman
483
Arithmetic Numbers
892
Arrows
377
ASCII Table
489
Card Number Validation
507
Catalan Numbers
344
Christmas Trees
694
Collatz
787747
CSS Colors
151
Day of Week
567
Divisors
871
Emirp Numbers
491
Emirp Numbers (Long)
562
Emojify
231
Evil Numbers
745
Evil Numbers (Long)
817
Factorial Factorisation
588
Farey Sequence
516
Fibonacci
500
574
Fizz Buzz
797
Foo Fizz Buzz Bar
748
Fractions
616
Happy Numbers
512
Happy Numbers (Long)
592
Intersection
623
ISBN
625
Kaprekar Numbers
162
Kolakoski Constant
96
Kolakoski Sequence
228
Leap Years
719
Levenshtein Distance
378
Leyland Numbers
414
ln 2
482
Morse Encoder
100
N Queens
472
Niven Numbers
789
Niven Numbers (Long)
919
Number Spiral
338
Odious Numbers
747
Odious Numbers (Long)
837
Ordinal Numbers
678
Pangram Grep
651
Partition Numbers
613736
Pascal’s Triangle
605
Pernicious Numbers
565
Pernicious Numbers (Long)
724
Prime Numbers
901
Prime Numbers (Long)
902
Quine
823
Recamán
642
Reverse Polish Notation
449
Rijndael S-box
201
Roman to Arabic
430
ROT13
432
Set
543
Seven Segment
358
Smith Numbers
552
Tic-tac-toe
315
Time Distance
630
Tongue-twisters
567
Transpose Sentence
429
United States
114106
Vampire Numbers
345
Van Eck Sequence
550
π
68
τ
70
φ
606
√2
808
𝑒
409