%I #6 Aug 16 2021 14:54:28
%S 1,17,181,1361,8107,40187,172207,653921,2243296,7053912,20568960,
%T 56141388,144540144,353269224,824102928,1843357923,3969216603,
%U 8255612079,16635486439,32560881353,62048339353,115351334813
%N Column 8 of triangle A055898.
%H A. J. Guttmann, <a href="https://doi.org/10.1016/S0012-365X(99)00262-9">Indicators of solvability for lattice models</a>, Discrete Math., 217 (2000), 167-189 (H_8 for square lattices of Section 6).
%Y Cf. A055898.
%K nonn
%O 8,2
%A _Christian G. Bower_, Jun 13 2000