# Math Help - Sequence Problem

1. ## Sequence Problem

Hi, All,

Recently, I got a sequence problem which is:

$a_{n} = a_{n-1} - \frac{a_{n-1}^2}{m-S_{n-2}}$
where $S_n$ is sum of $a_i$, i = 1,2,...,n, m is an integer.

Does anyone have some idea on $a_n$ or $S_n$ about their analytic expressions, not recursive expressions?

Thanks,