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A107506 Coordination sequence for D_11 lattice. 0
1, 220, 9482, 166188, 1660450, 11260876, 57581898, 237782204, 831240322, 2543995388, 6986455498, 17539148684, 40829208354, 89125931884, 184069213834, 362272019868, 683489419778, 1242224123932, 2183844052874, 3726523300588, 6190586013986, 10037135290380 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

Index entries for linear recurrences with constant coefficients, signature (11,-55,165,-330,462,-462,330,-165,55,-11,1).

FORMULA

G.f.: -(x +1)*(x^10 +208*x^9 +6909*x^8 +66912*x^7 +251010*x^6 +392864*x^5 +251010*x^4 +66912*x^3 +6909*x^2 +208*x +1) / (x -1)^11. [Colin Barker, Nov 20 2012]

CROSSREFS

Cf. A007900.

Sequence in context: A022042 A095702 A271674 * A140918 A049023 A282591

Adjacent sequences:  A107503 A107504 A107505 * A107507 A107508 A107509

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 28 2005

STATUS

approved

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Last modified May 25 00:59 EDT 2019. Contains 323534 sequences. (Running on oeis4.)