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 A057385 Low-temperature partition function expansion for hexagonal lattice (Potts model, q=3). 1
 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 6, 6, -8, 0, 36, 36, -42, -60, 272, 330, -402, -554, 1758, 3564, -3320, -7056, 14616, 33426, -21498, -83640, 111856, 354612, -158802, -884208, 758088, 3744582, -734260, -9805608, 4839270, 38734736, 2364180 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,7 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..69 (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: A334045 A028973 A066503 * A231108 A231285 A268729 Adjacent sequences: A057382 A057383 A057384 * A057386 A057387 A057388 KEYWORD sign AUTHOR N. J. A. Sloane, Aug 30 2000 STATUS approved

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Last modified September 18 20:09 EDT 2024. Contains 376002 sequences. (Running on oeis4.)