%I #7 Feb 28 2019 04:51:11
%S 1,0,3,-4,11,-24,55,-124,283,-640,1455,-3300,7491,-17000,38583,-87564,
%T 198731,-451024,1023615,-2323124,5272403,-11965880,27156935,-61633500,
%U 139879131,-317460000,720485263,-1635163524,3711054051,-8422351624,19114786775,-43381598124,98455874923
%N Expansion of (1-x)^(-1)/(1+x-2*x^2+2*x^3).
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0,3,-4,2).
%F A077970(n) = a(n)-a(n-1). - _R. J. Mathar_, Feb 28 2019
%K sign,easy
%O 0,3
%A _N. J. A. Sloane_, Nov 17 2002