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Low-temperature magnetization expansion for hexagonal lattice (Potts model, q=4).
1

%I #7 Mar 30 2012 16:48:52

%S 1,0,0,0,0,0,-4,0,0,0,-24,-48,60,0,-300,-480,144,1392,-4392,-7248,

%T 2904,13280,-27348,-142512,29948,241872,-336072,-1711936,-950268,

%U 4759680,-2790212,-25599600,-17648472,53777216,24551472,-385317888

%N Low-temperature magnetization expansion for hexagonal lattice (Potts model, q=4).

%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="/A057386/b057386.txt">Table of n, a(n) for n = 0..60</a> (from link below)

%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/potts/series/trp4mag.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 0,7

%A _N. J. A. Sloane_, Aug 30 2000