12 Days of Christmas
378
24 Game
255
99 Bottles of Beer
411
Abundant Numbers
798
800
752
Catalan Numbers
690
Christmas Trees
596
Collatz
792
CSS Colors
95
Cubes
402
Diamonds
469
Divisors
749
932
933
Emirp Numbers
355
398
505
Emojify
417
Evil Numbers
717
801
Factorial Factorisation
345
Farey Sequence
370
Fibonacci
674
719
934
Fizz Buzz
844
893
891
Gijswijt’s Sequence
274
Happy Numbers
554
Kolakoski Sequence
404
771
657
Leap Years
830
877
Leyland Numbers
816
ln 2
763
Look and Say
636
Lucky Numbers
572
Morse Decoder
258
Morse Encoder
265
N Queens
410
Niven Numbers
608
918
Niven Numbers (Long)
738
Odious Numbers
712
783
Ordinal Numbers
655
Pangram Grep
771
Pascal’s Triangle
840
537
Pernicious Numbers
711
Pernicious Numbers (Long)
728
Prime Numbers
767
621
912
Quine
946
Recamán
552
736
Reverse Polish Notation
765
Seven Segment
468
427
Sierpiński Triangle
582
513
Tongue-twisters
333
Vampire Numbers
97
612
Van Eck Sequence
673
π
74