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 A382272 #6 Mar 27 2025 20:22:42 %S A382272 0,1,0,824,8 %N A382272 Maximum number of orthogonal diagonal Latin squares with the first row in ascending order that can be orthogonal to a given Brown's diagonal Latin square of order 2n. %C A382272 A Brown's diagonal Latin square is a horizontally symmetric row-inverse or vertically symmetric column-inverse diagonal Latin square (see A339641). %C A382272 Brown's diagonal Latin squares are special case of plain symmetry diagonal Latin squares that do not exist for odd orders. %C A382272 a(6)>=1764493860. %H A382272 Eduard I. Vatutin, <a href="https://vk.com/wall162891802_2895">About the spectra of numerical characteristics of Brown's diagonal Latin squares</a> (in Russian). %H A382272 Eduard I. Vatutin, <a href="/A382272/a382272.txt">Proving list (best known examples)</a>. %H A382272 <a href="/index/La#Latin">Index entries for sequences related to Latin squares and rectangles</a>. %Y A382272 Cf. A287695, A339641. %K A382272 nonn,more,hard %O A382272 1,4 %A A382272 _Eduard I. Vatutin_, Mar 20 2025