%I #8 May 21 2018 15:10:19
%S 1,3,11,41,151,557,2055,7581,27967,103173,380615,1404125,5179951,
%T 19109333,70496151,260067021,959412031,3539362437,13057045415,
%U 48168685181,177698871247,655548074933,2418379337655,8921631905325,32912750541151,121418274109413
%N Expansion of 1/(1-3*x-2*x^2-2*x^3).
%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3,2,2).
%o (PARI) Vec(1/(1-3*x-2*x^2-2*x^3)+O(x^99)) \\ _Charles R Greathouse IV_, Sep 27 2012
%Y Partial sums of S(n, x), for x=1...16, A021823, A000217, A027941, A061278, A089817, A053142, A092521, A076765, A092420, A097784, A097826-A097828, A076139, A097829, A097830.
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_, Nov 17 2002