Fibonacci sequence

Joe asks:

Hi Drew! I have a question ...

How do the Fibonacci Numbers work?

Drew sez:

The Fibonacci numbers are a sequence of summable numbers. For example, this is the beginning part of the sequence:

1, 1, 2, 3, 5, 8, 13, 21, 34, 55 ...

You just add the last two numbers together to get the next number!

The Fibonacci numbers appear many times in nature.