12 Days of Christmas
891
99 Bottles of Beer
821
Abundant Numbers
782
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Christmas Trees
772
Cubes
596
Diamonds
669
Divisors
884
Emirp Numbers
495
Evil Numbers
677
Fibonacci
954703
Fizz Buzz
885
Gray Code Encoder
878
Hexdump
799
Kaprekar Numbers
722
Lucky Tickets
Morse Decoder
404
Niven Numbers
911
Odious Numbers
683
PalindromemordnilaP
657
Pangram Grep
758
Partition Numbers
709
Pernicious Numbers
515
Prime Numbers
712
Recamán
577
Rijndael S-box
504
ROT13
541
Scrambled Sort
649
United States
407
π
436
τ
429
φ
550
√2
518