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%I #6 Nov 28 2016 20:03:25
%S 2,328,1402272,34476662400,2862572968849920,606547177566513039360,
%T 275433333396552433711226880,237761902453820639998996848476160
%N arcsin(arctanh(x)*arctan(x))=2/2!*x^2+328/6!*x^6+1402272/10!*x^10...
%t With[{nn=30},Take[CoefficientList[Series[ArcSin[ArcTanh[x]*ArcTan[x]],{x,0,nn}],x] Range[0,nn]!,{3,-1,4}]] (* _Ray Chandler_, Nov 28 2016 *)
%K nonn
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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