Leonardo Fibonacci

An Italian mathematician named Leonardo Fibonacci created a system to describe patterns he found in nature through a number series known as Fibonacci numbers. The series starts like this: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144 . . . . To create this pattern, each number (except for the first number, number 1) is added to the number to its left. The sum becomes the next number in the series. 1 + 1 = 2, 2 + 1 = 3, 3 + 2 = 5, and so forth.