12 Days of Christmas
506
99 Bottles of Beer
793
Abundant Numbers
750
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Christmas Trees
735
Cubes
557
Diamonds
653
Divisors
876
Emirp Numbers
426
Evil Numbers
658
Fibonacci
938698
Fizz Buzz
879
Gray Code Encoder
875
Hexdump
701
Kaprekar Numbers
705
Lucky Tickets
Morse Decoder
344
Niven Numbers
899
Odious Numbers
671
PalindromemordnilaP
647
Pangram Grep
733
Partition Numbers
699
Pernicious Numbers
513
Prime Numbers
666
Recamán
571
Rijndael S-box
503
ROT13
539
Scrambled Sort
619
United States
329
π
430
τ
422
φ
542
√2
506