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A107507 Coordination sequence for D_12 lattice 0
1, 264, 13488, 278168, 3237984, 25290408, 147204624, 684347448, 2666539200, 9015945800, 27141718896, 74182306776, 186879023392, 439124493288, 971672262864, 2040402823544, 4092008534400, 7879085829000, 14630516376112, 26297796632856, 45903762942432 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

Index entries for linear recurrences with constant coefficients, signature (12,-66,220,-495,792,-924,792,-495,220,-66,12,-1).

FORMULA

G.f.: (x^12 +252*x^11 +10386*x^10 +133516*x^9 +732591*x^8 +1956216*x^7 +2698108*x^6 +1956216*x^5 +732591*x^4 +133516*x^3 +10386*x^2 +252*x +1) / (x -1)^12. [Colin Barker, Nov 20 2012]

CROSSREFS

Sequence in context: A278409 A168196 A264682 * A239183 A289062 A294181

Adjacent sequences:  A107504 A107505 A107506 * A107508 A107509 A107510

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 28 2005

STATUS

approved

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Last modified May 26 04:46 EDT 2019. Contains 323579 sequences. (Running on oeis4.)