%I #5 May 21 2018 15:16:01
%S 1,4,15,57,214,802,3006,11265,42214,158191,592797,2221416,8324416,
%T 31194472,116896497,438051684,1641531463,6151387249,23051379726,
%U 86381508066,323701445398,1213021491505,4545611889510,17033982987735,63832237216741,239201513294224
%N Expansion of (1-x)^(-1)/(1-3*x-2*x^2-3*x^3).
%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (4,-1,1,-3).
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Nov 17 2002
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