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 A387067 #11 Aug 18 2025 00:39:17 %S A387067 1,3,17,164,3096,111445 %N A387067 Number of equivalence classes (up to graph homeomorphism) of finite,connected graphs that have an embedding in an orientable surface of genus n which minimally separates the surface of genus n (that is, no proper subset of the embedding separates the genus n surface) but not the surface of genus n-1. %C A387067 n is called the minimal separating genus. %D A387067 C. N. Aagaard and J. J. P. Veerman, Classification of Minimal Separating Sets of Low Genus Surfaces, Topology and its Applications, Accepted, 2025. %e A387067 For genus 0: only the circle. %e A387067 For genus 1: bouquet of 2 circles, bouquet of 3 circles, 4-fold multi-edge. %Y A387067 Cf. A384639, A387066, A387068. %K A387067 nonn,more %O A387067 0,2 %A A387067 _J. J. P. Veerman_, Aug 15 2025