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%I A013029 #7 Feb 24 2012 12:51:16
%S A013029 2,-16,770,-92496,20740610,-7474383376,3950577954050,
%T A013029 -2879011223666256,2766724614020441090,-3389992164431254725136,
%U A013029 5158145935254382213801730,-9542165281823577542150984016
%N A013029 E.g.f. (in x^2) is arctan(sinh(x)+sin(x))
%t A013029 Partition[CoefficientList[Series[ArcTan[Sinh[x] + Sin[x]], {x, 0, 23}], x]*Range[0, 23]!, 2][[All,2]]
%o A013029 (PARI) x='x+O('x^33) /* That many terms */
%o A013029 v=Vec(serlaplace(atan(sin(x)+sinh(x)))); /* every second term is zero */
%o A013029 vector(#v\2,n,v[2*n-1]) /* show terms */
%o A013029 /* Joerg Arndt, Mar 16 2011 */
%K A013029 sign
%O A013029 0,1
%A A013029 Patrick Demichel (patrick.demichel(AT)hp.com)

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