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 A006436 M4743 #9 Apr 04 2021 13:43:52 %S A006436 10,192,1630,8924,36834,124560,362934,941820,2227368,4881448,889015725 %N A006436 Number of tree-rooted toroidal maps with 2 faces and n vertices and without isthmuses. %D A006436 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A006436 T. R. S. Walsh and A. B. Lehman, <a href="http://dx.doi.org/10.1016/0095-8956(75)90050-7">Counting rooted maps by genus. III: Nonseparable maps</a>, J. Combinatorial Theory Ser. B 18 (1975), 222-259. %Y A006436 Cf. A006437. %K A006436 nonn,more %O A006436 1,1 %A A006436 _N. J. A. Sloane_ %E A006436 Name clarified by _Andrew Howroyd_, Apr 04 2021