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%I #17 Jun 22 2015 22:40:56
%S 0,1,-1,-3,12,-5,-75,203,-1232,16245,-44685,-957671,11106876,
%T -34555105,-281002631,4852910775,-67849574400,823102605865,
%U -1467960664185,-158552006816779,2993025524196940,-21779819623624125
%N Expansion of e.g.f.: tanh(log(1+x))/cosh(x).
%H Vincenzo Librandi, <a href="/A009781/b009781.txt">Table of n, a(n) for n = 0..200</a>
%t With[{nn=30},CoefficientList[Series[Tanh[Log[1+x]]/Cosh[x],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Nov 12 2013 *)
%K sign,easy
%O 0,4
%A _R. H. Hardin_
%E Extended with signs by _Olivier Gérard_, Mar 15 1997
%E Definition clarified and previous Mathematica program replaced by _Harvey P. Dale_, Nov 12 2013
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