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Fibonacci
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Leonardo Pisano Bigollo (c. 11701250), also known as Fibonacci,^{[1]} was an Italian mathematician during the Middle Ages.^{[2]}
Fibonacci number sequence
Fibbonacci is best known for the list of numbers called the Fibonacci Sequence. The list never stops, but it starts this way:
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ...
In this list, a person can find the next number by adding the last two numbers together.
1 + 1 = 2 1 + 2 = 3 2 + 3 = 5 3 + 5 = 8 5 + 8 = 13 8 + 13 = 21 13 + 21 = 34 21 + 34 = 55 34 + 55 = 89 55 + 89 = 144 89 + 144 = 233 144 + 233 = 377 233 + 377 = 610 377 + 610 = 987 610 + 987 = 1597 987 + 1597 = 2584 etc...
This series is also interesting because the ratio of two adjacent numbers in the series approaches the golden ratio.^{[3]}
References
 ↑ This mathematician is also known as Leonardo Pisano, Leonardo Bonacci, Leonardo Fibonacci and Leonardo of Pisa.
 ↑ "The Fibonacci Series  Biographies  Leonardo Fibonacci (ca.1175  ca.1240)". Library.thinkquest.org. http://library.thinkquest.org/27890/biographies1.html. Retrieved 20100802.
 ↑ Livio, Mario. (2003). The Golden Ratio: The Story of Phi, the World's Most Astonishing Number, pp. 9697.

