Mathematics & Computer Science
is characterized by the fact that every number after the first two is the sum of the two preceding ones:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34 ...
The Fibonacci spiral is constructed from the sequence...
By User:Alvesgaspar:derivative work: RDBury (talk) - Mother_and_daughter.jpg, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=15047443
Fibonacci numbers appear often in mathematics, computer algorithms, and nature
branching in trees
(the arrangement of leaves on a stem)
the fruit sprouts of a pineapple
the flowering of an artichoke
an uncurling fern and the arrangement of a pine cone's bracts
The sequence is defined by the
F(n) = F(n-1) + F(n-2)
F(0) = 1, F(1) = 1