I want to know about reference of formulas for $$L(s,D)=\sum_{n=1}^\infty \left(\frac{D}{n}\right)\,n^{-s}$$ for $s$ a positive integer number and $D$ a fundamental discriminant. For $n=1$ s=1$we have the Dirichlet class number formula. I would like to have some reference for$n\geq3$. s\geq2$. Thanks.-.
I want to know about reference of formulas for $$L(s,D)=\sum_{n=1}^\infty \left(\frac{D}{n}\right)\,n^{-s}$$ for $s$ a positive integer number and $D$ a fundamental discriminant. For $n=1$ we have the Dirichlet class number formula.
I would like to have some reference for $n\geq3$. Thanks.-.