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%I #6 Jan 11 2019 06:29:03
%S 0,0,0,1,5,19,82,324,1328,5367,21809,88463,359056,1457052,5913112,
%T 23996513,97382945,395199883,1603802802,6508562056,26413086624,
%U 107189749111,434998095205,1765311927087,7163999648656,29072987143064,117984174051328,478804095978481,1943085707636701,7885442290344115
%N The sequence denoted by q_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.
%F Van'kov and Zhuravlyov give recurrences.
%F G.f.: x^4*(1+2*x-2*x^2+x^3)/(x^5-7*x^4+5*x^3+3*x^2-5*x+1)/(1+x)^2 . - _R. J. Mathar_, Jan 11 2019
%Y Cf. A323260-A323269.
%K nonn,easy
%O 1,5
%A _N. J. A. Sloane_, Jan 09 2019