# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a181592 Showing 1-1 of 1 %I A181592 #9 Mar 31 2012 20:24:49 %S A181592 1,0,0,1,2,0,8,8,283,243284 %N A181592 Number of isomorphism classes of idempotent self-orthogonal Latin squares of order n. %C A181592 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'. %D A181592 G. P. Graham and C. E. Roberts, 2006. Enumeration and isomorphic classification of self-orthogonal Latin squares, Journal of Combinatorial Mathematics and Combinatorial Computing, 59, pp. 101-118. %H A181592 A. P. Burger, M. P. Kidd and J. H. van Vuuren, 2010. Enumerasie van self-ortogonale Latynse vierkante van orde 10, LitNet Akademies (Natuurwetenskappe), 7(3), pp 1-22. %K A181592 nonn %O A181592 1,5 %A A181592 _Martin P Kidd_, Nov 01 2010 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE