What is the fibonacci sequence?

In mathematics, the Fibonacci numbers, commonly denoted Fₙ form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones

The Fibonacci sequence is one of the most famous formulas in mathematics.

Each number in the sequence is the sum of the two numbers that precede it. So, the sequence goes: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, and so on. The mathematical equation describing it is Xn+2 = Xn+1 + Xn