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A005400 High temperature series for spin-1/2 Heisenberg specific heat on 2D hexagonal lattice.
(Formerly M4603)
2

%I M4603

%S 0,9,18,-306,-3240,49176,1466640,-13626000,-1172668032,75256704

%N High temperature series for spin-1/2 Heisenberg specific heat on 2D hexagonal lattice.

%C The hexagonal lattice is the familiar 2-dimensional lattice in which each point has 6 neighbors. This is sometimes called the triangular lattice.

%D G. A. Baker et al., On the two-dimensional, spin-1/2 Heisenberg ferromagnetic models, Phys. Lett., 25A (1967), 207-209.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%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>

%K sign

%O 1,2

%A _N. J. A. Sloane_.

%E Better description from _Steven Finch_

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Last modified May 11 09:47 EDT 2021. Contains 343788 sequences. (Running on oeis4.)