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A013406 sech(arcsin(x)-tan(x))=1-10/6!*x^6-392/8!*x^8-11814/10!*x^10... 0

%I #6 Aug 30 2021 18:23:53

%S 1,0,0,-10,-392,-11814,496012,255399014,69358453968,19258160456306,

%T 6077931425640244,2258231645186973342,999755491596900217336,

%U 527324363004530542073450,328862882324660659119175452

%N sech(arcsin(x)-tan(x))=1-10/6!*x^6-392/8!*x^8-11814/10!*x^10...

%t With[{nn=30},Take[CoefficientList[Series[Sech[ArcSin[x]-Tan[x]],{x,0,nn}],x] Range[0,nn]!,{1,-1,2}]] (* _Harvey P. Dale_, Aug 30 2021 *)

%K sign

%O 0,4

%A Patrick Demichel (patrick.demichel(AT)hp.com)

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Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)