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A173987
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a(n) = denominator of 2(Pi^2)/3 - J - Zeta[2,(3n+2)/3]
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2
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1, 4, 100, 1600, 193600, 9486400, 2741569600, 2741569600, 1450290318400, 245099063809600, 206128312663873600, 3298053002621977600, 3298053002621977600, 1190597133946533913600, 2001393782164123508761600
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OFFSET
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0,2
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COMMENTS
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For definition constant J see A173973.
For nominators see A173985.
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LINKS
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Table of n, a(n) for n=0..14.
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MATHEMATICA
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Table[Denominator[RootApproximant[N[ -Zeta[2, (3 n + 2)/3] + 2 Pi^2/3 - k, 100], 1]], {n, 0, 20}]
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CROSSREFS
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A006752, A120268, A173945, A173947, A173948, A173949, A173953, A173955, A173973, A173982-A173988.
Sequence in context: A158082 A017090 A029995 * A052144 A165518 A127776
Adjacent sequences: A173984 A173985 A173986 * A173988 A173989 A173990
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KEYWORD
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frac,nonn
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AUTHOR
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Artur Jasinski, Mar 04 2010
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STATUS
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approved
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