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A012638 arctan(arcsinh(x)*cos(x))=x-6/3!*x^3+128/5!*x^5-7784/7!*x^7... 0

%I

%S 1,-6,128,-7784,863168,-153777536,40156766336,-14452100967680,

%T 6857570007949312,-4148412279035834368,3116288727548544729088,

%U -2846053921629037944078336,3105570670613041972460814336

%N arctan(arcsinh(x)*cos(x))=x-6/3!*x^3+128/5!*x^5-7784/7!*x^7...

%t With[{nn=30},Take[CoefficientList[Series[ArcTan[ArcSinh[x]Cos[x]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Apr 17 2015 *)

%K sign

%O 0,2

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

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Last modified January 28 11:01 EST 2022. Contains 350655 sequences. (Running on oeis4.)