12 Days of Christmas
891
99 Bottles of Beer
821
Abundant Numbers
782
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Christmas Trees
773
Cubes
596
Diamonds
669
Divisors
885
Emirp Numbers
496
Evil Numbers
677
Fibonacci
954703
Fizz Buzz
885
Gray Code Encoder
874
Hexdump
799
Kaprekar Numbers
724
Lucky Tickets
Morse Decoder
404
Niven Numbers
912
Odious Numbers
683
PalindromemordnilaP
657
Pangram Grep
758
Partition Numbers
710
Pernicious Numbers
516
Prime Numbers
713
Recamán
578
Rijndael S-box
505
ROT13
542
Scrambled Sort
649
United States
407
π
436
τ
429
φ
551
√2
518