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%I #8 Jun 13 2015 00:48:28
%S 0,1,3,11,44,179,730,2978,12149,49563,202197,824882,3365185,13728594,
%T 56007112,228486369,932131991,3802721591,15513566360,63289077427,
%U 258193843286,1053326473082,4297146069693,17530618299423
%N a(n+3) = 5*a(n+2)-4*a(n+1)+a(n).
%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (5,-4,1).
%F G.f. x*(-1+2*x) / ( -1+5*x-4*x^2+x^3 ). a(n) = A012814(n)-2*A012814(n-1). - _R. J. Mathar_, Sep 20 2012
%Y Cf. A012855.
%K nonn,easy
%O 0,3
%A _N. J. A. Sloane_.