12 Days of Christmas
741
99 Bottles of Beer
845
Abundant Numbers
833
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Christmas Trees
805
Cubes
618
Diamonds
712
Divisors
945
Emirp Numbers
537
Evil Numbers
727
Fibonacci
1,000729
Fizz Buzz
915
Gray Code Encoder
990
Hexdump
792
Kaprekar Numbers
790
Lucky Tickets
Morse Decoder
429
Niven Numbers
978
Odious Numbers
736
PalindromemordnilaP
755
Pangram Grep
808
Partition Numbers
786
Pernicious Numbers
558
Prime Numbers
767
Recamán
631
Rijndael S-box
552
ROT13
609
Scrambled Sort
719
United States
407
π
464
τ
467
φ
598
√2
557