Journal of Integer Sequences, Vol. 20 (2017), Article 17.6.6

A Proof of Symmetry of the Power Sum Polynomials Using a Novel Bernoulli Number Identity


Nicholas J. Newsome, Maria S. Nogin, and Adnan H. Sabuwala
Department of Mathematics
California State University, Fresno
Fresno, CA 93740
USA

Abstract:

The problem of finding formulas for sums of powers of natural numbers has been of interest to mathematicians for many centuries. Among these is Faulhabers well-known formula expressing the power sums as polynomials whose coefficients involve Bernoulli numbers. In this paper we give an elementary proof that the sum of p-th powers of the first n natural numbers can be expressed as a polynomial in n of degree p + 1. We also prove a novel identity involving Bernoulli numbers and use it to show the symmetry of this polynomial.


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(Concerned with sequences A027641 A027642.)


Received February 15 2017; revised versions received February 22 2017; March 1 2017; June 2 2017. Published in Journal of Integer Sequences, June 25 2017.


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