%I #6 Mar 20 2013 18:39:32
%S 2,-12,358,-19992,2033802,-315229860,70634865390,-21500632868400,
%T 8568722761815570,-4328828352860125500,2705283169021072846710,
%U -2049095504528923919551560,1849840972092365870411519130
%N arcsin(arcsinh(x)*arctan(x))=2/2!*x^2-12/4!*x^4+358/6!*x^6-19992/8!*x^8...
%t With[{nn=30},Take[CoefficientList[Series[ArcSin[ArcSinh[x]ArcTan[x]],{x,0,nn}],x] Range[0,nn]!,{3,-1,2}]] (* _Harvey P. Dale_, Mar 20 2013 *)
%K sign
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)