Question 913817

1,1,3,2,4,6,5,25

Start with 1; square; add 2; subtract 1; repeat.

1
1*1=1
1+2=3
3-1=2
2*2=4
4+2=6
6-1=5
5*5=25
25+2=27
27-1=26
26x26=676