

A285178


Number of n^2 X n^2 Spermutation matrices that are disjoint from a given one.


3




OFFSET

1,2


COMMENTS

Note that although the two Yordzhev papers have similar titles, they are different papers.


LINKS

Table of n, a(n) for n=1..6.
Krasimir Yordzhev, On the Number of Disjoint Pairs of Spermutation Matrices, arXiv:12112:1628 [math.CO], 2012.
Krasimir Yordzhev, On the number of mutually disjoint pairs of Spermutation matrices, Discrete Mathematics 340 (2017) 14421448.


CROSSREFS

Cf. A107739, A285179, A285180.
Sequence in context: A134645 A115997 A013786 * A072050 A249765 A201037
Adjacent sequences: A285175 A285176 A285177 * A285179 A285180 A285181


KEYWORD

nonn,more


AUTHOR

N. J. A. Sloane, Apr 14 2017


STATUS

approved



