99 Bottles of Beer
Abundant Numbers
518
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Catalan Numbers
Collatz
681
891
754
476
CSS Colors
Divisors
Emirp Numbers
Emojify
Evil Numbers
Fibonacci
616
Fizz Buzz
Foo Fizz Buzz Bar
Fractions
Happy Numbers
Leap Years
Morse Encoder
Niven Numbers
721
Odious Numbers
Pangram Grep
Pascalβs Triangle
Pernicious Numbers
Prime Numbers
Rule 110
Van Eck Sequence