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A130558
Denominators of partial sums of a series for 6*(5-4*Zeta(3)).
1
1, 9, 360, 9000, 7000, 343000, 8232000, 666792000, 7334712000, 887500152000, 11537501976000, 1949837833944000, 1949837833944000, 1949837833944000, 265177945416384000, 76636426225334976000, 161788010920151616000
OFFSET
2,2
COMMENTS
Numerators are given in A130557.
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.
FORMULA
a(n) = denominator(r(n)), n >= 2.
CROSSREFS
Sequence in context: A119756 A222697 A063068 * A132593 A162133 A197179
KEYWORD
nonn,frac,easy
AUTHOR
Wolfdieter Lang, Jul 13 2007
STATUS
approved