12 Days of Christmas
619
99 Bottles of Beer
832
Abundant Numbers
768
Arabic to Roman
641
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Christmas Trees
697
Collatz
879
Diamonds
620
Divisors
900
Emirp Numbers
711
Evil Numbers
817
Fibonacci
932539
Fizz Buzz
941
Happy Numbers
719
Morse Decoder
465
Morse Encoder
545
Odious Numbers
781
Pangram Grep
Pascal’s Triangle
833
Pernicious Numbers
721
Prime Numbers
740
Quine
962945
Recamán
845
Roman to Arabic
675
Seven Segment
701
Sierpiński Triangle
667
Spelling Numbers
United States