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A126920
Coordination sequence for 18-dimensional cyclotomic lattice Z[zeta_27].
0
1, 18, 171, 1149, 6147, 27873, 111243, 400617, 1324737, 4074197, 11768193, 32170743, 83746863, 208651167, 499620447, 1153893249, 2578177134, 5587511355, 11772651036, 24163091856, 48397837608, 94751037108, 181570410972, 341010096552, 628429016457
OFFSET
0,2
LINKS
M. Beck and S. Hosten, Cyclotomic polytopes and growth series of cyclotomic lattices, arXiv math.CO/0508136.
Index entries for linear recurrences with constant coefficients, signature (18, -153, 816, -3060, 8568, -18564, 31824, -43758, 48620, -43758, 31824, -18564, 8568, -3060, 816, -153, 18, -1).
FORMULA
G.f.: (x^3+1)^9/(1-x)^18.
CROSSREFS
Sequence in context: A139618 A162638 A010970 * A341228 A022583 A321951
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 18 2007
STATUS
approved