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 A338250 #23 Dec 24 2020 06:38:46 %S A338250 1,0,0,1,1,0,7,4545,291670 %N A338250 Number of isomorphism classes of pairs of orthogonal diagonal Latin squares of order n. %H A338250 Eduard I. Vatutin, Natalia N. Nikitina, Maxim O. Manzuk, <a href="https://vk.com/wall162891802_1485">First results of an experiment on studying the properties of DLS of order 9 in the volunteer distributed computing projects Gerasim@Home and RakeSearch</a> (in Russian). %H A338250 Eduard I. Vatutin, Natalia N. Nikitina, Maxim O. Manzuk, <a href="https://vk.com/wall162891802_1496">Additional calculated results of an experiment on studying the properties of DLS of order 9 in the volunteer distributed computing projects Gerasim@Home and RakeSearch</a> (in Russian). %H A338250 <a href="https://oeis.org/index/La#Latin">Index entries for sequences related to Latin squares and rectangles</a>. %Y A338250 Cf. A287651, A339926. %K A338250 nonn,more,hard %O A338250 1,7 %A A338250 _Eduard I. Vatutin_, Dec 22 2020