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 A038147 #18 Jul 08 2025 22:08:10 %S A038147 1,1,3,7,22,83,341,1519,7114,34350 %N A038147 Number of polyhexes with n cells. %H A038147 J. V. Knop, K. Szymanski, Ž. Jeričević, and N. Trinajstić, <a href="http://match.pmf.kg.ac.rs/electronic_versions/Match16/match16_119-134.pdf">On the total number of polyhexes</a>, Match, No. 16 (1984), 119-134. %H A038147 Louis Marin, <a href="https://arxiv.org/abs/2406.16413">Counting Polyominoes in a Rectangle b X h</a>, arXiv:2406.16413 [cs.DM], 2024. See p. 145. %Y A038147 See A000228 for another version of this sequence. %Y A038147 Cf. A018190, A038143-A038146. %K A038147 nonn,hard,more %O A038147 1,3 %A A038147 _N. J. A. Sloane_