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12 Days of Christmas

99 Bottles of Beer

Abundant Numbers

Abundant Numbers (Long)

Catalan Numbers

Catalan’s Constant

Christmas Trees

Collatz

Diamonds

Divisors

Emirp Numbers

Emirp Numbers (Long)

Evil Numbers

Evil Numbers (Long)

Fibonacci

Fizz Buzz

Foo Fizz Buzz Bar

Leap Years

Niven Numbers

Niven Numbers (Long)

Odious Numbers

Odious Numbers (Long)

Ordinal Numbers

Pernicious Numbers

Prime Numbers

Prime Numbers (Long)

λ

π

τ

φ

√2

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