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The sequence denoted by d_n used in the calculation of A323260.
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%I #6 Jan 11 2019 06:45:25

%S 0,0,1,3,12,49,197,802,3251,13199,53558,217359,882077,3579664,

%T 14526997,58953567,239245700,970908389,3940146321,15989925914,

%U 64890414991,263338678635,1068682634486,4336934396651,17600173665641,71425132301280,289857908288985,1176303134354955,4773680566664252,19372579641254793,78617921060228045

%N The sequence denoted by d_n used in the calculation of A323260.

%H K. A. Van'kov, V. M. Zhuravlyov, <a href="https://www.mccme.ru/free-books/matpros/pdf/mp-22.pdf#page=127">Regular tilings and generating functions</a>, Mat. Pros. Ser. 3, issue 22, 2018 (127-157) [in Russian]. See Table 1.

%H <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (4,2,-8,2,6,-1).

%F Van'kov and Zhuravlyov give recurrences.

%F G.f.: -x^2*(x^2-x-1)*(x-1)^2/(1+x)/(x^5-7*x^4+5*x^3+3*x^2-5*x+1) . - _R. J. Mathar_, Jan 11 2019

%Y Cf. A323260-A323269.

%K nonn,easy

%O 1,4

%A _N. J. A. Sloane_, Jan 09 2019