A055901 Column 5 of triangle A055898.

1, 11, 76, 376, 1496, 5032, 14872, 39572, 96607, 219373, 468440, 948640, 1834560, 3407040, 6104736, 10594728, 17868213, 29367063, 47149828, 74105240, 114224968, 172946488, 257581688, 377845468, 546504595, 780165113

Offset: 5

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_5 for square lattices of Section 6).

Crossrefs

Cf. A055898.

Formula

G.f.: x^5*(1+4x+16x^2+24x^3+36x^4+24x^5+16x^6+4x^7+x^8)/((1-x)^11*(1+x)^4).