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%I #8 Mar 30 2012 16:48:52
%S 108,0,0,0,900,2178,-3672,0,14112,27000,-18432,-114444,290628,467856,
%T -354600,-1479114,1768536,12073896,-5861808,-29193750,22900176,
%U 165214728,64153152,-654007014,163350540,2795893038
%N Low-temperature specific heat 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="/A057388/b057388.txt">Table of n, a(n) for n = 0..54</a> (from link below)
%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/potts/series/trp4sh.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>
%H <a href="/index/Sp#specific_heat">Index entries for sequences related to specific heat</a>
%Y Cf. A057374-A057405.
%K sign
%O 0,1
%A _N. J. A. Sloane_, Aug 30 2000
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