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A111341 A035481(n-1) - A058162(n), number of Latin squares in dimension n with first row and first column 1,2,3 ..., n which are non-associative but commutative (element ij = element ji). 1
0, 0, 0, 50, 396, 6120 (list; graph; refs; listen; history; internal format)
OFFSET

3,4

COMMENTS

At order 6 there are commutative but non-associative Latin squeres. - Artur Jasinski (grafix(AT)csl.pl), Dec 08 2006

CROSSREFS

Sequence in context: A184564 A184556 A031420 * A019561 A164757 A189415

Adjacent sequences:  A111338 A111339 A111340 * A111342 A111343 A111344

KEYWORD

nonn

AUTHOR

Artur Jasinski (grafix(AT)csl.pl), Nov 06 2005

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Last modified February 17 08:44 EST 2012. Contains 205998 sequences.