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A013024 sech(sinh(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+53/4!*x^4-310/5!*x^5... 0

%I

%S 1,0,-4,6,53,-310,-1084,21777,-16167,-2030292,13363866,218310675,

%T -3848323263,-17777649162,1083429365196,-4100141609445,

%U -313461156294543,4496165231894296,83761047906347382

%N sech(sinh(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+53/4!*x^4-310/5!*x^5...

%t With[{nn=20},CoefficientList[Series[Sech[Sinh[x]+Log[x+1]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Mar 27 2013 *)

%K sign

%O 0,3

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

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Last modified September 30 17:27 EDT 2022. Contains 357106 sequences. (Running on oeis4.)