%I #16 Oct 02 2023 15:24:54
%S 1,3,6,9,11,11,10,9,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
%T 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
%U 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
%N Expansion of (1 + x)*(1 + x^2)^2*(1 + x - x^3) / (1 - x).
%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (1).
%F a(n) = 8 for n >= 8.
%o (PARI) Vec((1 + x)*(1 + x^2)^2*(1 + x - x^3) / (1 - x) + O(x^80)) \\ _Colin Barker_, Nov 23 2019
%Y Row 4 of array in A329508.
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_, Nov 22 2019