Multiplying and adding a sequence

Hello all, I'm having a bit of a problem with a formula. Attached are the values, and what I'm trying to get is a total product of (a2+a2*a3+a2*a3*a4+a2*a3*a4*a5....etc, on down to the last value). I've tried multiple formulas with rows and sumproduct, etc., but nothing seems to be working! Thanks for looking!

~Laura