Evaluation of Series Involving the Product of the Tail of $${\zeta(k)}$$ ζ ( k ) and $${\zeta(k+1)}$$ ζ ( k + 1 )

Abstract

We aim at evaluating the following class of series involving the product of the tail of two consecutive zeta function values $$\sum\limits_{n=1}^{\infty}\left(\zeta(k)-1-\frac{1}{2^k}-\cdots-\frac{1}{n^k}\right)\left(\zeta(k+1)-1-\frac{1}{2^{k+1}}-\cdots-\frac{1}{n^{k+1}}\right),$$ where \({k\geq 2}\) is an integer. We show that the series can be expressed in terms of Riemann zeta function values and a special integral involving a polylogarithm function.