12 Days of Christmas
890
99 Bottles of Beer
820
Abundant Numbers
794
Christmas Trees
768
Cubes
593
Diamonds
656
Divisors
880
Emirp Numbers
491
Evil Numbers
675
Fibonacci
949
701Fizz Buzz
882
Morse Decoder
417
Niven Numbers
904
Odious Numbers
679
Pangram Grep
751
Pernicious Numbers
512
Prime Numbers
709
United States
405
π
433
τ
427
φ
547
√2
515