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%I #10 Sep 09 2022 16:08:37
%S 720,7056,907200,112907520,217945728000,5109989068800,145508493312000,
%T 1223606598230016000,216153986111078400000,45359209940997897584640000,
%U 2540736205097615504179200000,142333345151212060346941440000
%N Coefficients of Pi^(2*n+1) in a certain integer relation involving Ramanujan exponential-type sums.
%H Simon Plouffe, <a href="https://arxiv.org/abs/1101.6066">Identities inspired by Ramanujan Notebooks, Second Series</a> (Aug 2006, rev. Mar 2011).
%H Linas Vepstas, <a href="http://www.linas.org/math/plouffe-ram.pdf">On Plouffe's Ramanujan Identities</a> (2006).
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/RiemannZetaFunction.html">Riemann Zeta Function</a>
%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Zeta_constants">Zeta Constants.</a>
%K nonn
%O 3,1
%A _Simon Plouffe_, May 28, 2006
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