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a(n) = A027082(n, n+3).
0

%I #26 Jun 24 2020 12:41:17

%S 5,16,39,84,169,328,623,1168,2173,4024,7431,13700,25233,46448,85471,

%T 157248,289269,532096,978727,1800212,3311161,6090232,11201743,

%U 20603280,37895405,69700584,128199431,235795588,433695777,797690976

%N a(n) = A027082(n, n+3).

%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (3,-2,0,-1,1).

%F G.f.: (x^3-x^2-x-5)/((x-1)^2(x^3+x^2+x-1)). - _Harvey P. Dale_, May 15 2013

%F a(n) = A027025(n) + n + 1.

%F a(n) = A000213(n+6) -3*(n+4). - _R. J. Mathar_, Jun 24 2020

%t CoefficientList[Series[-((-x^3+x^2+x+5)/((x-1)^2 (x^3+x^2+x-1))),{x,0,30}],x] (* _Harvey P. Dale_, May 15 2013 *)

%Y Cf. A027025, A027082.

%K nonn,easy

%O 0,1

%A _Clark Kimberling_