# Math Help - Recursive Definition

1. ## Recursive Definition

The question is that I need to give a recursive definition for the following.
I have trouble getting the basis step and the inductive step.
any help would be appreciated.
Thanks for answering!

2. maybe you can define $
S_0=a_0,
S_{n+1}=S_n+a_n$
for n=0,1,2,......