A055903 Column 7 of triangle A055898.

1, 15, 141, 939, 4971, 21981, 84351, 287961, 891564, 2539756, 6733764, 16769916, 39526524, 88722756, 190653804, 393952284, 785736369, 1517620599, 2846653381, 5198360739, 9261986019, 16131790389, 27513326919, 46020006201

Offset: 7

Author

Christian G. Bower, Jun 13 2000

Keywords

• nonn

Links

• A. J. Guttmann, Indicators of solvability for lattice models, Discrete Math., 217 (2000), 167-189 (H_7 for square lattices of Section 6).

Crossrefs

Cf. A055898.