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 A361366 #11 Mar 10 2023 10:09:14 %S A361366 1,3,16,218,9026,907123 %N A361366 Number of unlabeled simple planar digraphs with n nodes. %D A361366 M. Kirchweger, M. Scheucher, and S. Szeider, SAT-Based Generation of Planar Graphs, in preparation. %Y A361366 Directed variant of A005470. %Y A361366 Cf. A000273 %K A361366 nonn,more %O A361366 1,2 %A A361366 _Manfred Scheucher_, Mar 09 2023