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 A343089 #8 Jan 02 2022 14:35:19 %S A343089 1,8,59,420,2940,20384,140479,964184,6598481,45059872,307197620, %T A343089 2091615760,14226362200,96680047568,656559634503,4456100344560, %U A343089 30228597199443,204971912361512,1389342336011059,9414200925647540,63772600432265968,431892497914345472 %N A343089 Number of nonseparable rooted toroidal maps with n edges. %H A343089 Andrew Howroyd, <a href="/A343089/b343089.txt">Table of n, a(n) for n = 2..100</a> %Y A343089 Row sums of A342989. %Y A343089 Cf. A006300. %K A343089 nonn %O A343089 2,2 %A A343089 _Andrew Howroyd_, Apr 04 2021