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A012226 arcsinh(arctan(tanh(x)))=x-5/3!*x^3+129/5!*x^5-8189/7!*x^7... 0

%I #6 Aug 24 2019 10:22:13

%S 1,-5,129,-8189,972609,-186825429,53036534017,-20924521480269,

%T 10970414196349569,-7386311927549483045,6216439933812148586625,

%U -6398271924540885631183389,7909256594572491509610323905

%N arcsinh(arctan(tanh(x)))=x-5/3!*x^3+129/5!*x^5-8189/7!*x^7...

%t With[{nn=30},Take[CoefficientList[Series[ArcSinh[ArcTan[Tanh[x]]],{x,0,nn}],x] Range[0,nn-1]!,{2,-1,2}]] (* _Harvey P. Dale_, Aug 24 2019 *)

%K sign

%O 0,2

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

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Last modified February 29 07:23 EST 2024. Contains 370414 sequences. (Running on oeis4.)