Respuesta :

The Fibonacci series starts (usually with two ones) and a two. for the first 3 numbers. It looks like this
1 1 2 3 5 8 etc.

Yours is a variation in the way it starts but it follows the same rule. 
To get the next term in the series, you add the previous 2 terms.

So for example, to get 8, you would add 3 and 5 together. To get 13 your add 5 and 8 together.

To get the next branch add 8 and 13 together. That makes 21. To get the one after that, add 21 and 13 together. 21 + 13 = 34

When you study recursion, this series is going to come up a great deal.

Answer: 21, 34
C <<<<< answer