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(d(n)-r(n))/5, where d = A006527 and r is the periodic sequence with fundamental period (4,1,4,0,1).
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%I #11 Oct 21 2022 21:34:11

%S 0,2,4,9,15,23,35,49,68,90,116,148,184,227,275,329,391,459,536,620,

%T 712,814,924,1045,1175,1315,1467,1629,1804,1990,2188,2400,2624,2863,

%U 3115,3381,3663,3959,4272,4600,4944,5306,5684,6081,6495,6927,7379,7849,8340,8850,9380,9932,10504,11099,11715

%N (d(n)-r(n))/5, where d = A006527 and r is the periodic sequence with fundamental period (4,1,4,0,1).

%H <a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (3,-3,1,0,1,-3,3,-1)

%F G.f.: [(2-2x+x^2)(1+x^2)x^3]/[(1-x)^3(1-x^5)].

%t LinearRecurrence[{3,-3,1,0,1,-3,3,-1},{0,2,4,9,15,23,35,49},60] (* _Harvey P. Dale_, Jun 09 2018 *)

%K nonn,easy

%O 2,2

%A _Clark Kimberling_