A055902 Column 6 of triangle A055898.

1, 13, 106, 615, 2850, 11087, 37626, 114177, 315805, 807520, 1930600, 4354140, 9331560, 19117980, 37630440, 71461368, 131399829, 234661713, 408100330, 692741335, 1150092658, 1870787919, 2986277658, 4684437485, 7230182505

Offset

6,2

Links

Table of n, a(n) for n=6..30.

A. J. Guttmann, Indicators of solvability for lattice models, Discrete Math., 217 (2000), 167-189 (H_6 for square lattices of Section 6).

Crossrefs

Cf. A055898.

Sequence in context: A080422 A030055 A155636 * A295249 A295648 A218093

Adjacent sequences: A055899 A055900 A055901 * A055903 A055904 A055905

Keyword

nonn

Author

Christian G. Bower, Jun 13 2000

Status

approved