%I #7 Dec 15 2023 12:16:52
%S 1,9,45,162,468,1152,2511,4977,9144,15795,25929,40788,61884,91026,
%T 130347,182331,249840,336141,444933,580374,747108,950292,1195623,
%U 1489365,1838376,2250135,2732769,3295080,3946572,4697478,5558787,6542271,7660512,8926929
%N Coordination sequence for 6-dimensional cyclotomic lattice Z[zeta_9].
%H M. Beck and S. Hosten, <a href="http://arxiv.org/abs/math/0508136">Cyclotomic polytopes and growth series of cyclotomic lattices</a>, arXiv math.CO/0508136
%H <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (6, -15, 20, -15, 6, -1).
%F G.f.: (x^2+x+1)^3/(1-x)^6.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Mar 17 2007