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 A181593 #6 Mar 31 2012 20:24:49 %S A181593 1,0,0,6,22,0,3972,104120,69112956,881912947656 %N A181593 Number of isomorphism classes of self-orthogonal Latin squares of order n. %C A181593 A self-orthogonal Latin square (SOLS) is a Latin square orthogonal to its transpose. Two SOLS L and L' are isomorphic if a permutation applied to the rows, columns and symbols of L maps L to L'. %H A181593 A. P. Burger, M. P. Kidd and J. H. van Vuuren, 2010. <a href="http://www.vuuren.co.za/papers/SOLSEnum10.pdf">Enumerasie van self-ortogonale Latynse vierkante van orde 10</a>, LitNet Akademies (Natuurwetenskappe), 7(3), pp. 1-22. %H A181593 A. P. Burger, M. P. Kidd and J. H. van Vuuren, <a href="http://www.vuuren.co.za/papers/SOLSEnum.pdf">Enumeration of isomorphism classes of self-orthogonal Latin squares</a>, Ars Combinatoria, 97, pp. 143-152. %K A181593 hard,more,nonn %O A181593 1,4 %A A181593 _Martin P Kidd_, Nov 01 2010 %E A181593 a(10) from Martin Kidd, Oct 20 2011