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A323263 The sequence denoted by d_n used in the calculation of A323260. 0
0, 0, 1, 3, 12, 49, 197, 802, 3251, 13199, 53558, 217359, 882077, 3579664, 14526997, 58953567, 239245700, 970908389, 3940146321, 15989925914, 64890414991, 263338678635, 1068682634486, 4336934396651, 17600173665641, 71425132301280, 289857908288985, 1176303134354955, 4773680566664252, 19372579641254793, 78617921060228045 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..31.

K. A. Van'kov, V. M. Zhuravlyov, Regular tilings and generating functions, Mat. Pros. Ser. 3, issue 22, 2018 (127-157) [in Russian]. See Table 1.

Index entries for linear recurrences with constant coefficients, signature (4,2,-8,2,6,-1).

FORMULA

Van'kov and Zhuravlyov give recurrences.

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

CROSSREFS

Cf. A323260-A323269.

Sequence in context: A060113 A134589 A178872 * A248347 A037758 A037646

Adjacent sequences:  A323260 A323261 A323262 * A323264 A323265 A323266

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jan 09 2019

STATUS

approved

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Last modified April 22 11:46 EDT 2019. Contains 322330 sequences. (Running on oeis4.)