ABSTRACT. The aim of the paper is the investigation of special infinite series of the formand {f n (n)} n∈N 0 is a sequence of rational functions. A general summation method for the sum above in the case of the special choice of parameters a, b and f n (n) is included. We find the 2m-tuple of rational numbers α i , β j (1 ≤ i ≤ m, 1 ≤ j ≤ m) for which