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A057383 Low-temperature susceptibility expansion for hexagonal lattice (Potts model, q=3). 2
2, 0, 0, 0, 24, 24, -20, 0, 366, 324, -42, -312, 4788, 6036, -1356, -1820, 54036, 99252, -3024, -53352, 686988, 1382336, 285870, -926172, 7988984, 19975392, 6245886, -12161464, 89970804, 273568968, 134393334, -181279824 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

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

LINKS

I. Jensen, Table of n, a(n) for n = 0..62 (from link below)

I. Jensen, More terms

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

CROSSREFS

Cf. A057374-A057405.

Sequence in context: A209401 A029696 A118887 * A218881 A169772 A193542

Adjacent sequences: A057380 A057381 A057382 * A057384 A057385 A057386

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Aug 30 2000

STATUS

approved

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Last modified November 27 13:59 EST 2022. Contains 358405 sequences. (Running on oeis4.)