cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A210627 Constants r_n arising in study of polynomials of least deviation from zero in several variables.

This page as a plain text file.
%I A210627 #12 Mar 30 2012 17:22:10
%S A210627 72,896,14400,283392,6598144,177373184,5406289920,184223744000,
%T A210627 6939874934784,286375842938880,12846564299505664,622448445155704832,
%U A210627 32395710363284275200,1802446793652649852928,106760825994912064339968,6707088257932303257305088,445456559121345605093294080,31185504805980142781333504000
%N A210627 Constants r_n arising in study of polynomials of least deviation from zero in several variables.
%H A210627 Yuan Xu, <a href="http://www.emis.de/journals/EM/expmath/volumes/13/13.html">On polynomials of least deviation from zero in several variables</a>, J. Experimental Math. 13 (2004), 103-112.
%F A210627 For n>3, r_n = n*Sum_{k=4..n} k^(n-3) binomial(n,k) [(-1)^k(9k^2-32k+24)+k^2].
%F A210627 Conjecture: a(n) = n*A038049(n). - R. J. Mathar, Mar 27 2012
%K A210627 nonn
%O A210627 3,1
%A A210627 _N. J. A. Sloane_, Mar 25 2012