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%I
%S 2,-9,361,-37247,7669801,-2611958283,1332778136517,-950743937966607,
%T 903562629244729137,-1103376848629556507859,1683455518560856213155933,
%U -3138189120711848323676011959
%N arcsinh(arctan(x)+arcsin(x))=2*x-9/3!*x^3+361/5!*x^5-37247/7!*x^7...
%t With[{nn=30},Take[CoefficientList[Series[ArcSinh[ArcTan[x]+ArcSin[x]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Sep 02 2016 *)
%K sign
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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