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%I #9 Aug 08 2019 18:55:02
%S 1,-3,8,-24,70,-204,596,-1740,5080,-14832,43304,-126432,369136,
%T -1077744,3146624,-9187008,26822752,-78312768,228645056,-667561152,
%U 1949037952,-5690488320,16614174848,-48507402240,141624130816,-413491415808,1207245897728,-3524722888704,10290920404480
%N Expansion of (1-x)/(1+2*x-2*x^2+2*x^3).
%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (-2, 2, -2).
%F a(0)=1, a(1)=-3, a(2)=8, a(n)=-2*a(n-1)+2*a(n-2)-2*a(n-3). - _Harvey P. Dale_, Mar 06 2013
%t CoefficientList[Series[(1-x)/(1+2x-2x^2+2x^3),{x,0,50}],x] (* or *) LinearRecurrence[{-2,2,-2},{1,-3,8},50] (* _Harvey P. Dale_, Mar 06 2013 *)
%K sign,easy
%O 0,2
%A _N. J. A. Sloane_, Nov 17 2002