3,4
At order 6 there are commutative but non-associative Latin squeres. - Artur Jasinski (grafix(AT)csl.pl), Dec 08 2006
Sequence in context: A184564 A184556 A031420 * A019561 A164757 A189415
Adjacent sequences: A111338 A111339 A111340 * A111342 A111343 A111344
nonn
Artur Jasinski (grafix(AT)csl.pl), Nov 06 2005