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 A346414 #10 Jul 16 2021 10:10:30 %S A346414 1,1,4,20,114,710,4726,33157,243048,1850817,14590692 %N A346414 Number of labeled totally ordered commutative semigroups. %H A346414 Petr Gajdoš and Martin Kuřil, <a href="https://doi.org/10.1007/s00233-014-9602-3">Ordered semigroups of size at most 7 and linearly ordered semigroups of size at most 10</a>, Semigroup Forum, 89 (2014), 639-663. %Y A346414 Cf. A023815. %K A346414 nonn,hard,more %O A346414 0,3 %A A346414 _Peter Jipsen_, Jul 15 2021