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 A360221 #17 Oct 20 2024 13:57:38 %S A360221 0,0,0,12,0,0,0,2,0 %N A360221 Minimum number of intercalates in an orthogonal diagonal Latin square of order n. %C A360221 An intercalate is a 2 X 2 subsquare of a Latin square. %C A360221 An orthogonal diagonal Latin squares is a diagonal Latin square that has at least one orthogonal diagonal mate. %C A360221 a(10) <= 1, a(11) = 0, a(12) <= 4, a(13) = 0. - _Eduard I. Vatutin_, added Jan 30 2023, updated Sep 24 2024 %H A360221 Eduard I. Vatutin, <a href="https://vk.com/wall162891802_1709">About the spectra of numerical characteristics of orthogonal diagonal Latin squares of orders 1-11</a> (in Russian). %H A360221 Eduard I. Vatutin, <a href="/A360221/a360221_1.txt">Proving list (best known examples)</a>. %H A360221 E. I. Vatutin, N. N. Nikitina, M. O. Manzuk, A. M. Albertyan, and I. I. Kurochkin, <a href="http://evatutin.narod.ru/evatutin_spectra_t_dt_i_o_small_orders_thesis.pdf">On the construction of spectra of fast-computable numerical characteristics for diagonal Latin squares of small order</a>, Intellectual and Information Systems (Intellect - 2021), Tula, 2021, pp. 7-17. (in Russian) %H A360221 <a href="/index/La#Latin">Index entries for sequences related to Latin squares and rectangles</a>. %Y A360221 Cf. A305570, A305571, A307163, A354050, A360223. %K A360221 nonn,more,hard,bref %O A360221 1,4 %A A360221 _Eduard I. Vatutin_, Jan 30 2023