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 A166490 #12 Dec 27 2023 17:50:58 %S A166490 1152,172800,0,12192768000,608662978560000,464573723443200000,0 %N A166490 Number of SOLSSOMs of order n. %C A166490 A SOLSSOM is a self-orthogonal Latin square with a symmetric orthogonal mate. %D A166490 A.P. Burger, M.P. Kidd and J.H. van Vuuren, Enumeration of self-orthogonal Latin squares with symmetric orthogonal mates, Submitted to LitNet Akademies (Natuurwetenskappe) %Y A166490 Cf. A166487, A166488, A166489. %K A166490 hard,more,nonn %O A166490 4,1 %A A166490 _Martin P Kidd_, Oct 21 2009 %E A166490 Number for n=8 corrected by _Martin P Kidd_, Nov 01 2010