Hey, so following problem:

I want to express $\displaystyle (1-2^{1-s})*\sum_{n=1}^{\infty}\frac{1}{n^s}$

as a Dirichlet series, i.e. as a series of the form

$\displaystyle \sum_{n=1}^{\infty}\frac{a_n}{n^s}$ where $\displaystyle a_n$ is any complex sequence.

Who can help?