%I #7 Apr 21 2020 15:41:36
%S 1,3,10,33,106,342,1102,3549,11431,36816,118573,381888,1229944,
%T 3961272,12758041,41089731,132337402,426218121,1372717642,4421101854,
%U 14239010998,45859480485,147699299527,475694073504,1532064487045,4934309093184,15891893868016
%N Expansion of (1-x)^(-1)/(1-2*x-3*x^2-3*x^3).
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (3,1,0,-3).
%t LinearRecurrence[{3,1,0,-3},{1,3,10,33},30] (* _Harvey P. Dale_, Apr 21 2020 *)
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Nov 17 2002