A107506 Coordination sequence for D_11 lattice.

1, 220, 9482, 166188, 1660450, 11260876, 57581898, 237782204, 831240322, 2543995388, 6986455498, 17539148684, 40829208354, 89125931884, 184069213834, 362272019868, 683489419778, 1242224123932, 2183844052874, 3726523300588, 6190586013986, 10037135290380

Offset: 0

Author

N. J. A. Sloane, May 28 2005

Keywords

• nonn
• easy

Links

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

Crossrefs

Cf. A007900.

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]