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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
OFFSET
0,2
LINKS
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
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 28 2005
STATUS
approved