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Expansion of e.g.f. tan(tanh(x))*exp(x).
1

%I #14 Feb 09 2014 08:38:46

%S 0,1,2,3,4,-3,-42,-49,456,2905,10154,-83589,-1263668,-334059,74121726,

%T 351159815,-1582556016,-39776495567,-396499390126,2339943411315,

%U 87145255604884,181395497796525,-10528569148387290,-87834301596283969

%N Expansion of e.g.f. tan(tanh(x))*exp(x).

%H Vincenzo Librandi, <a href="/A009716/b009716.txt">Table of n, a(n) for n = 0..200</a>

%t With[{nn=30},CoefficientList[Series[Tan[Tanh[x]]Exp[x],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Jul 27 2013 *)

%K sign,easy

%O 0,3

%A _R. H. Hardin_

%E Extended with signs by _Olivier GĂ©rard_, Mar 15 1997

%E Definition clarified and Mathematica program replaced by _Harvey P. Dale_, Jul 27 2013