Journal
REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS
Volume 115, Issue 2, Pages -Publisher
SPRINGER-VERLAG ITALIA SRL
DOI: 10.1007/s13398-021-01025-3
Keywords
Binomial sums; Binomial coefficients; Riemann zeta function; Gamma function; Combinatorial identities; Harmonic numbers
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The paper presents explicit formulas for a family of parametric binomial sums involving harmonic numbers for various values of p and |t| <= 1. It also generalizes a relation between Stirling numbers and the Riemann zeta function to polygamma function and provides some new series representations for the Apery constant zeta(3).
We present explicit formulas for the following family of parametric binomial sums involving harmonic numbers for p = 0, 1,2 and vertical bar t vertical bar <= 1. Sigma(infinity)(k=1) H(k-1)t(k)/k(p)(n+k(k)) and Sigma(infinity)(k=1) t(k)/k(p)(n+k(k)). We also generalize the following relation between the Stirling numbers of the first kind and the Riemann zeta function to polygamma function and give some applications. zeta(n + 1) = Sigma(infinity)(k=n) s(k,n)/kk!, n = 1, 2, 3, .... As examples, zeta(3) = 1/7 Sigma(infinity)(k=1)H(k-1)4(k)/k(2)(2k(k)), and zeta(3) = 8/7 + 1/7 Sigma(infinity)(k=1) H(k-1)4(k)/k(2)(2k + 1)(2k(k)), which are new series representations for the Apery constant zeta(3).
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