This pattern is called Fibonacci. Fibonacci is a pattern that seems to be everywhere. The pattern goes like this: 1, 1, 2, 3, 5, 8, 13, 21 etc. A Fibonacci spiral starts with a rectangle partitioned into 2 squares. In each step, a square the length of the rectangle's longest side is added to the rectangle. This pattern is in a lot of places. There is even a song where the syllables follows the pattern. These pictures will show Fibonacci in real life.