12 Days of Christmas
603
99 Bottles of Beer
702
Abundant Numbers
776
634
Abundant Numbers (Long)
854
697
Arabic to Roman
646
Arithmetic Numbers
756
Arrows
229
573
366
394
303
Ascending Primes
540
ASCII Table
671
Card Number Validation
545
Catalan Numbers
804
Christmas Trees
685
Collatz
454533728643882723509719419477841579712695514655674458586585723705391669913701577455746771691707547618697597657739395599753516
839590671543583
Day of Week
539
Diamonds
384
596
267
Divisors
856
Emirp Numbers
370394
468
Emirp Numbers (Long)
659
720
Emojify
433
Evil Numbers
546529
771
400
Evil Numbers (Long)
777
Factorial Factorisation
463
Farey Sequence
340
Fibonacci
931
Fizz Buzz
975
Foo Fizz Buzz Bar
944
Fractions
739
Happy Numbers
505507
598
592
Happy Numbers (Long)
836
Intersection
759
Inventory Sequence
660
ISBN
358
386
474
772
Kaprekar Numbers
696
Kolakoski Constant
575
Kolakoski Sequence
510
Leap Years
826
Leyland Numbers
785
ln 2
575
Look and Say
562
240
Lucky Numbers
518
513
Mandelbrot
648
Medal Tally
569
Minesweeper
324
40
564
Niven Numbers
931
Niven Numbers (Long)
751
Number Spiral
314
Odious Numbers
806
Odious Numbers (Long)
810
Pascal’s Triangle
764
726
Pernicious Numbers
521488
737
Pernicious Numbers (Long)
861
Prime Numbers
823
Prime Numbers (Long)
860
Quine
936
944
Recamán
712
Repeating Decimals
529
Rock-paper-scissors-Spock-lizard
431576
ROT13
627
Set
605
Sierpiński Triangle
564
Smith Numbers
798
Spelling Numbers
587
Ten-pin Bowling
234
Time Distance
709
Tongue-twisters
396
Transpose Sentence
438
Trinomial Triangle
454
United States
704
Vampire Numbers
436
613
Van Eck Sequence
648
Zeckendorf Representation
647
π
574
τ
572
φ
845
√2
926
𝑒
752
66