A055899 - OEIS

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A055899

Column 3 of triangle A055898.

1, 7, 31, 101, 272, 636, 1340, 2600, 4725, 8135, 13391, 21217, 32536, 48496, 70512, 100296, 139905, 191775, 258775, 344245, 452056, 586652, 753116, 957216, 1205477, 1505231, 1864695, 2293025, 2800400, 3398080, 4098496, 4915312 (list; graph; refs; listen; history; internal format)

	OFFSET	`3,2`
	LINKS	`A. J. Guttmann, Indicators of solvability for lattice models, Discrete Math., 217 (2000), 167-189 (H_3 for square lattices of Section 6).`
	FORMULA	`G.f.: x^3(1+2x+4x^2x+2x^3+x^4)/((1-x)^7(1+x)^2).`
	CROSSREFS	`Sequence in context: A193437 A199921 A192596 * A139876 A107392 A054497` `Adjacent sequences: A055896 A055897 A055898 * A055900 A055901 A055902`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Jun 13 2000`

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Last modified February 15 15:18 EST 2012. Contains 205823 sequences.