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The Fibonacci sequence is named after Leonardo of Pisa, who was known as Fibonacci (a contraction of filius Bonacci, "son of Bonaccio"). Fibonacci's 1202 book Liber Abaci introduced the sequence to Western European mathematics, although the sequence was independently described in Indian mathematics and it is disputed which came first.

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en.wikipedia.org/wiki/Fibonacci_number

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Taken on February 10, 2011