%I #5 Dec 16 2022 15:41:23
%S 1,2,5,12,30,74,185,460,1150,2866,7165,17868,44670,111418,278545,
%T 694796,1736990,4332770,10831925,27019404,67548510,168494762,
%U 421236905,1050744652,2626861630,6552514834,16381287085
%N Expansion of (1+2*x-3*x^2-4*x^3+x^4)/(1-8*x^2+11*x^4).
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0,8,0,-11).
%t CoefficientList[Series[(1+2x-3x^2-4x^3+x^4)/(1-8x^2+11x^4),{x,0,40}],x] (* or *) LinearRecurrence[{0,8,0,-11},{1,2,5,12,30},40] (* _Harvey P. Dale_, Dec 16 2022 *)
%K nonn
%O 0,2
%A _N. J. A. Sloane_.