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12 Days of Christmas

99 Bottles of Beer

Abundant Numbers

Abundant Numbers (Long)

Arabic to Roman

Arrows

ASCII Table

Catalan Numbers

Catalan’s Constant

Christmas Trees

Collatz

Cubes

Day of Week

Diamonds

Divisors

Emirp Numbers

Emirp Numbers (Long)

Emojify

Evil Numbers

Evil Numbers (Long)

Fibonacci

Fizz Buzz

Foo Fizz Buzz Bar

Forsyth–Edwards Notation

Fractions

Happy Numbers

Happy Numbers (Long)

Intersection

ISBN

Kolakoski Constant

Kolakoski Sequence

Leap Years

Levenshtein Distance

Leyland Numbers

Look and Say

Lucky Numbers

Morse Decoder

Morse Encoder

Musical Chords

Niven Numbers

Niven Numbers (Long)

Number Spiral

Odious Numbers

Odious Numbers (Long)

Ordinal Numbers

Pangram Grep

Pascal’s Triangle

Pernicious Numbers

Prime Numbers

Prime Numbers (Long)

Recamán

Reverse Polish Notation

Roman to Arabic

Rule 110

Seven Segment

Sierpiński Triangle

Smith Numbers

Spelling Numbers

Star Wars Opening Crawl

Time Distance

Tongue-twisters

United States

Vampire Numbers

Van Eck Sequence

π

τ

φ

√2

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