Take a number, add it to the number before it in a sequence like 1+1=2 then 2+1=3 then 3+2=5, 8, 13, 21 and so on a very specific pattern emerges.

The Fibonacci sequence is a series of numbers in which each number is the sum of the two that precede it. Starting at 0 and 1, the first 10 numbers of the sequence look like this: 0, 1, 1, 2, 3, 5 ...

This spruce cone displays a marked fibonacci number sequence. The sequence, thought up by 13th-century Italian mathematician Leonardo of Pisa, pen name Fibonacci, plays out in plants, from pine ...