%I #18 Apr 01 2017 22:32:53
%S 1,-2,32,-688,29952,-1922560,160364544,-19815696384,2743045259264,
%T -538516252917760,112957538226929664,-31810392390007521280,
%U 9466977656209217159168,-3592556624975295837896704
%N Expansion of sin(tan(x)/cosh(x)).
%t With[{nn=30},Take[CoefficientList[Series[Sin[Tan[x]/Cosh[x]],{x,0,nn}], x]Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, May 08 2012 *)
%K sign
%O 1,2
%A _R. H. Hardin_
%E Extended with signs by _Olivier GĂ©rard_, Mar 15 1997
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