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 A361139 #10 Mar 03 2023 07:57:10 %S A361139 0,1,9,69,510,3738,27405,201569,1488762,11043318,82257890,615092178, %T A361139 4615882908,34752865332,262437282621,1987229885913 %N A361139 Number of rooted bipartite maps of genus 1/2 with n edges. %H A361139 Valentin Bonzom, Guillaume Chapuy, and Maciej Dolega, <a href="https://doi.org/10.5802/alco.268">Enumeration of non-oriented maps via integrability</a>, Alg. Combin. 5 (6) (2022) pp. 1363-1390, A.2. %Y A361139 Cf. A000257 (genus 0). %K A361139 nonn,more %O A361139 1,3 %A A361139 _R. J. Mathar_, Mar 02 2023