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 A055919 #10 Jun 21 2022 07:38:20 %S A055919 2,4,10,24,60,152,402,1094,3012,8232,22086 %N A055919 Number of directed site animals on hexagonal net (honeycomb) with n sites. %H A055919 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 A055919 A. J. Guttmann and A. R. Conway, <a href="https://blogs.unimelb.edu.au/tony-guttmann/files/2019/09/hexfinal.pdf">Hexagonal lattice directed site animals</a>, Statistical Physics on the Eve of the Twenty-First Century, ed. M. T. Batchelor, World Scientific, 1999. %Y A055919 Row sums of A055907. %K A055919 nonn,more %O A055919 1,1 %A A055919 _Christian G. Bower_, Jun 22 2000 %E A055919 Name edited by _Andrey Zabolotskiy_, Jun 21 2022