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 A055901 Column 5 of triangle A055898. 2
 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 Cf. A055898. 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 December 9 20:47 EST 2023. Contains 367695 sequences. (Running on oeis4.)