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A173987 a(n) = denominator of 2(Pi^2)/3 - J - Zeta[2,(3n+2)/3] 2
1, 4, 100, 1600, 193600, 9486400, 2741569600, 2741569600, 1450290318400, 245099063809600, 206128312663873600, 3298053002621977600, 3298053002621977600, 1190597133946533913600, 2001393782164123508761600 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

For definition constant J see A173973.

For nominators see A173985.

LINKS

Table of n, a(n) for n=0..14.

MATHEMATICA

Table[Denominator[RootApproximant[N[ -Zeta[2, (3 n + 2)/3] + 2 Pi^2/3 - k, 100], 1]], {n, 0, 20}]

CROSSREFS

A006752, A120268, A173945, A173947, A173948, A173949, A173953, A173955, A173973, A173982-A173988.

Sequence in context: A017090 A029995 A244352 * A052144 A165518 A127776

Adjacent sequences:  A173984 A173985 A173986 * A173988 A173989 A173990

KEYWORD

frac,nonn

AUTHOR

Artur Jasinski, Mar 04 2010

STATUS

approved

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Last modified December 20 16:24 EST 2014. Contains 252269 sequences.