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 A350009 #19 Dec 08 2021 16:27:28 %S A350009 1,1,1,2,1,6,7,415,3460,35878418,6320290037,4612965997149292, %T A350009 15859695832489637513 %N A350009 a(n) is the number of isotopism classes containing symmetric Latin squares of order n. %C A350009 Isotopism classes are obtained by permuting rows, permuting columns and permuting symbols. There is a stronger notion of equivalence called "species" (also known as main classes and paratopism classes). For this particular problem the counts for species equal the counts for isotopism classes. %H A350009 Brendan D. McKay and Ian M. Wanless, <a href="https://doi.org/10.1002/jcd.21814">Enumeration of Latin squares with conjugate symmetry</a>, J. Combin. Des. 30 (2022), 105-130. %Y A350009 The odd terms agree with A350010. Cf. A035481 %K A350009 nonn,more %O A350009 1,4 %A A350009 _Ian Wanless_, Dec 08 2021