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A055901 Column 5 of triangle A055898. 0
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,2

LINKS

Table of n, a(n) for n=5..30.

A. J. Guttmann, Indicators of solvability for lattice models, Discrete Math., 217 (2000), 167-189 (H_5 for square lattices of Section 6).

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).

CROSSREFS

Sequence in context: A282384 A092225 A282816 * A036427 A122589 A302382

Adjacent sequences:  A055898 A055899 A055900 * A055902 A055903 A055904

KEYWORD

nonn

AUTHOR

Christian G. Bower, Jun 13 2000

STATUS

approved

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Last modified October 19 16:17 EDT 2019. Contains 328223 sequences. (Running on oeis4.)