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%I #11 Jul 30 2018 03:35:38
%S 0,1,-2,7,-28,185,-1352,12367,-129568,1558865,-21053312,316097527,
%T -5218724608,94003171145,-1834214761472,38543705698687,
%U -867787269787648,20840298552277025,-531768169691512832,14366953364916735847,-409720712943913074688
%N Expansion of e.g.f. log(cos(x) + tan(x)).
%H Vincenzo Librandi, <a href="/A013011/b013011.txt">Table of n, a(n) for n = 0..200</a>
%e x - 2/2!*x^2 + 7/3!*x^3 - 28/4!*x^4 + 185/5!*x^5 ...
%t With[{nn=25}, Drop[CoefficientList[Series[Log[Cos[x] + Tan[x]], {x, 0, nn}], x] Range[0, nn]!]] (* _Vincenzo Librandi_ Jul 30 2018 *)
%o (PARI) x = 'x + O('x^30); concat([0], Vec(serlaplace(log(cos(x) + tan(x))))) \\ _Michel Marcus_, Jul 30 2018
%K sign
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
%E a(0)=0 inserted and title improved by _Sean A. Irvine_, Jul 30 2018