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%I #7 Nov 09 2019 15:34:52
%S 1,9,360,9000,7000,343000,8232000,666792000,7334712000,887500152000,
%T 11537501976000,1949837833944000,1949837833944000,1949837833944000,
%U 265177945416384000,76636426225334976000,161788010920151616000
%N Denominators of partial sums of a series for 6*(5-4*Zeta(3)).
%C Numerators are given in A130557.
%C 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 a(n) = denominator(r(n)), n >= 2.
%K nonn,frac,easy
%O 2,2
%A _Wolfdieter Lang_, Jul 13 2007