What is the equation for the Fibonacci Sequence?

Hope this helps. By the way I'm ______ years old. You decide what goes in the blank. 1-1-2-3-5-8-13-21-34-55-89-144-233

The Fibonacci Sequence is when you add the previous two numbers to get the next one.

0+1=1

1+1=2

1+2=3

2+3=5

3+5=8

5+8=13

8+13=21 etc.