A055920 - OEIS

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A055920

Susceptibility series H_4 for 2-dimensional Ising model (divided by 2) for 1 particle excitation.

1, 16, 90, 328, 886, 2016, 3986, 7208, 12050, 19096, 28802, 41936, 59030, 81048, 108586, 142816, 184386, 234688, 294410, 365176, 447702, 543856, 654370, 781368, 925586, 1089416, 1273586, 1480768, 1711670, 1969256, 2254202 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`A. J. Guttmann, Indicators of solvability for lattice models, Discrete Math., 217 (2000), 167-189 (H_4(1)/2 of Section 3).`
	FORMULA	`G.f.: (1+14x+56x^2+122x^3+146x^4+122x^5+56x^6+14x^7+x^8)/((1-x)^5(1+x)^3).`
	CROSSREFS	`1/2 of column 4 of A055921.` `Sequence in context: A035291 A120045 A119771 * A055856 A195591 A050406` `Adjacent sequences: A055917 A055918 A055919 * A055921 A055922 A055923`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Jun 19 2000`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.