A057384 - OEIS

%I #8 Mar 30 2012 16:48:52

%S 72,0,0,0,600,726,-1440,0,7056,8100,-13824,-20808,94176,119130,

%T -196800,-291942,917664,1986924,-2389248,-5092500,10788960,26041338,

%U -21643104,-81270876,111771360,369058596,-215519232,-1109316384

%N Low-temperature specific heat 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="/A057384/b057384.txt">Table of n, a(n) for n = 0..63</a> (from link below)

%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/potts/series/trp3sh.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