Fibonacci Number

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Fibonacci number

[¦fib·ə¦nä·chē ′nəm·bər]
A number in the Fibonacci sequence whose first two terms are f1= f2= 1.

Fibonacci Number


any term in the recursive number sequence 1, 1, 2, 3, 5, 8,.... In this sequence, which is called a Fibonacci sequence, each term, after the second, is the sum of the two previous terms. Fibonacci numbers are named for the medieval mathematician Leonardo Fibonacci.


Vorob’ev, N. N. Chisla Fibonachchi, 3rd ed. Moscow, 1969.
References in periodicals archive ?
Iterations of Fibonacci Number Ratios Converging to the Golden Mean 1 1.
E List the first twenty Fibonacci numbers in order.
After a few weeks of guided exploration, many children can, with just a few minutes of effort, set up a spreadsheet to list the Fibonacci numbers.
has taken a fresh look at Fibonacci numbers and unexpectedly discovered a new mathematical constant: the number 1.
To do this, it will be helpful if each term in this proposed equation can be expressed in terms of Fibonacci numbers, [F.
Stakhov and Aranson trace the connection of the golden ratio, Fibonacci numbers, Lucas sequences, and Binet's formulas with the "golden" hyperbolic Fibonacci and Lucas functions, Fibonacci </lambda>-numbers, and metallic proportions.
Sun, Fibonacci numbers and Fermat's last theorem, Acta Arith.
This series of numbers is known as the Fibonacci numbers or the Fibonacci sequence.
Fibonacci numbers form a sequence of non-negative integers [F.
Rabinowitz: Algorithmic manipulation of Fibonacci Identities, Applications of Fibonacci numbers, Vol.
Other examples of FIBONACCI NUMBERS appear in the branching of trees, the arrangement of leaves on a stem, and the arrangement of a pine cone.