How to convert iterative loop to vectorized operation in matlab?

Question

MATLAB

Dear colleagues, I ask for your advice!
there is an extremely simple loop written in matlab:
Fi(1) = 0
for k = 2:N
Fi(k) ~ F(k-1)......
end
the problem is that N = 10^7. ..10^8 and everything is considered to be very long.
To speed up I try parfor, but there was a problem: it is impossible to calculate the current value without calculating the previous result Fi(k) ~ F(k-1). Therefore, the question arises: is it possible to rewrite the iterative cycle in vector form? And if so, how?