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%I #7 Mar 30 2012 16:48:52
%S 2,0,0,0,24,24,-20,0,366,324,-42,-312,4788,6036,-1356,-1820,54036,
%T 99252,-3024,-53352,686988,1382336,285870,-926172,7988984,19975392,
%U 6245886,-12161464,89970804,273568968,134393334,-181279824
%N Low-temperature susceptibility expansion for hexagonal lattice (Potts model, q=3).
%C The hexagonal lattice is the familiar 2-dimensional lattice in which each point has 6 neighbors. This is sometimes called the triangular lattice.
%H I. Jensen, <a href="/A057383/b057383.txt">Table of n, a(n) for n = 0..62</a> (from link below)
%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/potts/series/trp3sus.ser">More terms</a>
%H G. Nebe and N. J. A. Sloane, <a href="http://www.math.rwth-aachen.de/~Gabriele.Nebe/LATTICES/A2.html">Home page for hexagonal (or triangular) lattice A2</a>
%Y Cf. A057374-A057405.
%K sign
%O 0,1
%A _N. J. A. Sloane_, Aug 30 2000
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