Fibonacci numbers are seen in the natural structures of various plants, such as the florets in sunflower heads, areoles on cacti stems, and scales in pine cones.

And the sequence of monthly totals that got us there will have looked like this: The first 12 terms of the Fibonacci sequence (starting at one, not zero).

The Fibonacci sequence is a set of steadily increasing numbers where each number is equal to the sum of the preceding two numbers.