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Related to Fibonacci numbers: Golden ratio
Fi•bo•nac′ci num`bers(ˌfi boʊˈnɑ tʃi)
the unending sequence 1, 1, 2, 3, 5, 8, 13, 21, … where each term is defined as the sum of its two predecessors. Also called Fibonac′ci se`quence.
[1890–95; after Leonardo Fibonacci, 13th-century Italian mathematician]
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