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A007207 Magnetization for hexagonal lattice.
(Formerly M4818)
0
12, -2, 78, -24, 548, -228, 4050, -2030, 30960, -17670, 242402, -152520, 1932000, -1312844, 15612150, -11297052 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The hexagonal lattice is the familiar 2-dimensional 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, 380-381, 384-387, 390-391, 412-423. (Annotated scanned copy)

G. Nebe and N. J. A. Sloane, Home page for hexagonal (or triangular) lattice A2

CROSSREFS

Sequence in context: A303782 A040143 A163599 * A302799 A213059 A038328

Adjacent sequences:  A007204 A007205 A007206 * A007208 A007209 A007210

KEYWORD

sign

AUTHOR

Simon Plouffe

STATUS

approved

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Last modified October 22 19:53 EDT 2019. Contains 328319 sequences. (Running on oeis4.)