English

New series with Cauchy and Stirling numbers, Part 2

Combinatorics 2021-03-23 v1

Abstract

We evaluate in closed form several series involving products of Cauchy numbers with other special numbers (harmonic, skew-harmonic, hyperharmonic, and central binomial). Similar results are obtained with series involving Stirling numbers of the first kind. We focus on several particular cases which give new closed forms for Euler sums of hyperharmonic numbers and products of hyperharmonic and harmonic numbers.

Keywords

Cite

@article{arxiv.2103.11960,
  title  = {New series with Cauchy and Stirling numbers, Part 2},
  author = {Khristo N. Boyadzhiev and Levent Kargın},
  journal= {arXiv preprint arXiv:2103.11960},
  year   = {2021}
}