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%I #6 Apr 05 2019 13:20:48
%S 2,-4,-82,3096,14202,-4057260,614585190,65252737200,9930277245810,
%T 3938676912038700,2327811184268315550,661470912900859782600,
%U 625005810716811201651690,275157523021831158684027780
%N tanh(arctan(x)*arcsin(x))=2/2!*x^2-4/4!*x^4-82/6!*x^6+3096/8!*x^8...
%t With[{nn=30},Take[CoefficientList[Series[Tanh[ArcTan[x]ArcSin[x]],{x,0,nn}],x] Range[0,nn]!,{3,-1,2}]] (* _Harvey P. Dale_, Apr 05 2019 *)
%K sign
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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