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%I #5 Mar 30 2012 16:48:52
%S 1,0,0,6,9,36,99,342,1188,4314,16308,61362,244344,969480,3990681,
%T 16401402,69105645,292097790,1254450831,5412716802,23608046241,
%U 103512674946,457382482686,2031136391286,9072992530731
%N Low-temperature partition function expansion for honeycomb net (Potts model, q=4).
%H I. Jensen, <a href="/A057397/b057397.txt">Table of n, a(n) for n = 0..30</a> (from link below)
%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/potts/series/hcp4pf.ser">More terms</a>
%Y Cf. A057374-A057405.
%K nonn
%O 0,4
%A _N. J. A. Sloane_, Aug 30 2000
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