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.
%I A130558 #7 Nov 09 2019 15:34:52
%S A130558 1,9,360,9000,7000,343000,8232000,666792000,7334712000,887500152000,
%T A130558 11537501976000,1949837833944000,1949837833944000,1949837833944000,
%U A130558 265177945416384000,76636426225334976000,161788010920151616000
%N A130558 Denominators of partial sums of a series for 6*(5-4*Zeta(3)).
%C A130558 Numerators are given in A130557.
%C A130558 For the rationals r(n) := 4!*Sum_{j=2..n} 1/((j^3)*(j^2-1)), n >= 2, the Z. A. Melzak reference and a W. Lang link see A130557.
%F A130558 a(n) = denominator(r(n)), n >= 2.
%K A130558 nonn,frac,easy
%O A130558 2,2
%A A130558 _Wolfdieter Lang_, Jul 13 2007