This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A055901 #10 Aug 15 2024 03:32:42 %S A055901 1,11,76,376,1496,5032,14872,39572,96607,219373,468440,948640,1834560, %T A055901 3407040,6104736,10594728,17868213,29367063,47149828,74105240, %U A055901 114224968,172946488,257581688,377845468,546504595,780165113 %N A055901 Column 5 of triangle A055898. %H A055901 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_5 for square lattices of Section 6). %F A055901 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). %Y A055901 Cf. A055898. %K A055901 nonn %O A055901 5,2 %A A055901 _Christian G. Bower_, Jun 13 2000