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%I A143605 #3 Mar 30 2012 17:34:27
%S A143605 1,-1,1,-1,1,0,-1,2,-3,3,-3,2,0,-3,5,-7,8,-7,4,1,-7,13,-17,19,-16,8,4,
%T A143605 -18,32,-42,44,-36,16,13,-47,79,-101,103,-80,31,40,-121,195,-241,240,
%U A143605 -178,55,117,-309,478,-575
%N A143605 Polynomial expansion sequence : p(x)=1 + x - x^5 + x^9 + x^10.
%F A143605 p(x)=1 + x - x^5 + x^9 + x^10; a(n)=expansion_coefficients(x^10*p(1/x)),
%t A143605 f[x_] = 1 + x - x^5 + x^9 + x^10; g[x] = ExpandAll[x^10*f[1/x]]; a = Table[SeriesCoefficient[Series[1/g[x], {x, 0, 50}], n], {n, 0, 50}]
%K A143605 sign
%O A143605 1,8
%A A143605 _Roger L. Bagula_, Oct 26 2008

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