

A007207


Magnetization for hexagonal lattice.
(Formerly M4818)


0



12, 2, 78, 24, 548, 228, 4050, 2030, 30960, 17670, 242402, 152520, 1932000, 1312844, 15612150, 11297052
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OFFSET

1,1


COMMENTS

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


REFERENCES

C. Domb, Ising model, in Phase Transitions and Critical Phenomena, vol. 3, ed. C. Domb and M. S. Green, Academic Press, 1974; p. 421.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS

Table of n, a(n) for n=1..16.
C. Domb, Ising model, Phase Transitions and Critical Phenomena 3 (1974), 257, 380381, 384387, 390391, 412423. (Annotated scanned copy)
G. Nebe and N. J. A. Sloane, Home page for hexagonal (or triangular) lattice A2


CROSSREFS

Sequence in context: A040143 A163599 A334700 * A302799 A213059 A038328
Adjacent sequences: A007204 A007205 A007206 * A007208 A007209 A007210


KEYWORD

sign


AUTHOR

Simon Plouffe


STATUS

approved



