%I #6 Aug 04 2024 17:28:32
%S 1,0,4,-6,19,-140,910,-5250,39925,-414360,4244200,-42242750,500292775,
%T -7036001700,98944220050,-1395690728250,22347132003625,
%U -399376247582000,7158271817183500,-130527261318021750
%N Expansion of e.g.f.: cosh(arctan(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+19/4!*x^4-140/5!*x^5...
%t With[{nn=20},CoefficientList[Series[Cosh[ArcTan[x]+Log[x+1]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Aug 04 2024 *)
%K sign
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
%E Definition clarified by _Harvey P. Dale_, Aug 04 2024