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 A383684 #12 Aug 23 2025 00:03:02 %S A383684 1,0,0,8,15,0,23,128,133,716 %N A383684 Minimum number of transversals in an extended self-orthogonal diagonal Latin square of order n. %C A383684 A self-orthogonal diagonal Latin square (SODLS) is a diagonal Latin square orthogonal to its transpose. An extended self-orthogonal diagonal Latin square (ESODLS) is a diagonal Latin square that has an orthogonal diagonal Latin square from the same main class. SODLS is a special case of ESODLS. %H A383684 Eduard I. Vatutin, <a href="https://vk.com/wall162891802_2937">About the properties of ESODLS of orders 1-10 (in Russian)</a>. %H A383684 Eduard I. Vatutin, <a href="/A383684/a383684.txt">Proving list (best known examples)</a>. %H A383684 <a href="/La#Latin">Index entries for sequences related to Latin squares and rectangles</a>. %Y A383684 Cf. A090741, A091323, A287644, A287645, A309210, A309598, A309599, A357514, A387124, A387187. %K A383684 nonn,more,hard,changed %O A383684 1,4 %A A383684 _Eduard I. Vatutin_, May 05 2025