A010109 Partition function coefficients for square lattice spin 5/2 Ising model.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 2, -1, 0, 0, 0, 0, 0, 0, 0, 10, -14, 5, 0, 0, 0, 0, 0, 9, 34, -105, 84, -21, 0, 0, 0, 30, 36, 36, -594, 911, -524, 106, 22, 69, 102, -86, -268, -2557, 7446, -7464, 3418, -361, 50, -158, -1142, -1850, -7216

Offset

0,20

Links

I. Jensen, Table of n, a(n) for n = 0..126 (from link below)

I. G. Enting, A, J. Guttmann and I. Jensen, Low-Temperature Series Expansions for the Spin-1 Ising Model, arXiv:hep-lat/9410005, 1994; J. Phys. A. 27 (1994) 6987-7006.

I. Jensen, More terms

Iwan Jensen, Anthony J. Guttmann, Series expansions of the percolation probability for directed square and honeycomb lattices, arXiv:cond-mat/9509121, 1995; J. Phys. A 28 (1995), no. 17, 4813-4833.

Crossrefs

Sequence in context: A219482 A037859 A037877 * A304021 A056974 A368844

Adjacent sequences: A010106 A010107 A010108 * A010110 A010111 A010112

Keyword

sign

Author

N. J. A. Sloane, Simon Plouffe

Extensions

"Free energy" corrected to "partition function" (basically the exponential of the free energy) in the name by Andrey Zabolotskiy, Feb 12 2022

Status

approved