Question 499468
the first 2 terms (1 and 1) are given, and then each term is the sum of the two terms before it.
So
1 =given
1 =given
2=1+1
3+2+1
5=3+2
8=5+3
13=5+8
_=13+8
_=_+_


I think this should help, but leave me a comment and let me know.