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 A187014 #21 Jul 16 2017 21:00:14 %S A187014 0,0,1,2,3,7,22,57,174,554,1848,6291,22052,78361,282420 %N A187014 Number of isomorphism classes of simply embedded (i.e., loop-free and without parallel edges bounding a disk) bipartite quadrangulations of RP^2 of minimum degree 3 with n nodes and n-1 faces. %C A187014 Also the number of isomorphism classes of homologically trivial basic nets on RP^2 with n-1 nodes and n faces. %C A187014 Also the number of isomorphism classes of simple quadrangulations of the sphere of minimum degree 3 with 2n nodes and 2n-2 faces which admit an orientation reversing involution without fix nodes and fix edges such that the bipartite coloring is preserved under the involution. %H A187014 S. Yu. Orevkov, <a href="http://arxiv.org/abs/1307.7377">Basic nets in the projective plane</a> %Y A187014 Cf. A078666, A187013. %K A187014 nonn,more %O A187014 4,4 %A A187014 _Stepan Orevkov_, Aug 30 2013