12 Days of Christmas
914
99 Bottles of Beer
736
Abundant Numbers
828
671
Abundant Numbers (Long)
925
805
Arabic to Roman
696
Arithmetic Numbers
817
Arrows
325
511
360
372
305
Ascending Primes
591
ASCII Table
721
Card Number Validation
602
Catalan Numbers
881
Christmas Trees
731
Collatz
411485587789677932761582818478545930622791753642722743507648667784771410731967724600470818821755796583656734664741817461628800572
907667737603632
Day of Week
588
Diamonds
406
642
312
Divisors
898
Emirp Numbers
583578
697
Emirp Numbers (Long)
722
793
Emojify
402
Evil Numbers
587579
831
432
Evil Numbers (Long)
849
Factorial Factorisation
504
Farey Sequence
372
Fibonacci
966
Fizz Buzz
1,000
Foo Fizz Buzz Bar
992
Fractions
804
Happy Numbers
729684
761
802
Happy Numbers (Long)
919
Intersection
836
Inventory Sequence
725
ISBN
392
425
524
841
Kaprekar Numbers
750
Kolakoski Constant
636
Kolakoski Sequence
573
Leap Years
890
Leyland Numbers
859
ln 2
646
Look and Say
611
254
Lucky Numbers
556
571
Mandelbrot
720
Medal Tally
601
Minesweeper
368
46
642
Niven Numbers
985
Niven Numbers (Long)
849
Number Spiral
345
Odious Numbers
857
Odious Numbers (Long)
873
Pascal’s Triangle
830
776
Pernicious Numbers
556523
789
Pernicious Numbers (Long)
938
Prime Numbers
921
Prime Numbers (Long)
922
Quine
1,000
969
Recamán
769
Repeating Decimals
593
Rock-paper-scissors-Spock-lizard
467601
ROT13
701
Set
691
Sierpiński Triangle
600
Smith Numbers
877
Spelling Numbers
653
Ten-pin Bowling
251
Time Distance
798
Tongue-twisters
642
Transpose Sentence
498
Trinomial Triangle
510
United States
800
Vampire Numbers
478
670
Van Eck Sequence
720
Zeckendorf Representation
723
π
620
τ
630
φ
927
√2
1,000
𝑒
821
76