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%I #6 Nov 27 2020 15:11:07
%S 2,4,230,3848,739018,41124620,15086858670,1991912000016,
%T 1097015309746578,280098851345357332,209537736711807583862,
%U 90218727574059928609048,87280770952178581593296986
%N arcsin(arcsinh(x)*tan(x))=2/2!*x^2+4/4!*x^4+230/6!*x^6+3848/8!*x^8...
%t With[{nn=30},Take[CoefficientList[Series[ArcSin[ArcSinh[x]Tan[x]],{x,0,nn}],x] Range[0,nn]!,{3,-1,2}]] (* _Harvey P. Dale_, Nov 27 2020 *)
%K nonn
%O 0,1
%A Patrick Demichel (patrick.demichel(AT)hp.com)
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