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A285178 Number of n^2 X n^2 S-permutation matrices that are disjoint from a given one. 3
0, 7, 17972, 41685061617, 232152032603580176504, 7236273578711450275537707547657855 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Note that although the two Yordzhev papers have similar titles, they are different papers.
LINKS
Krasimir Yordzhev, On the Number of Disjoint Pairs of S-permutation Matrices, arXiv:12112:1628 [math.CO], 2012.
Krasimir Yordzhev, On the number of mutually disjoint pairs of S-permutation matrices, Discrete Mathematics 340 (2017) 1442-1448.
CROSSREFS
Sequence in context: A115997 A013786 A351326 * A072050 A249765 A201037
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Apr 14 2017
STATUS
approved

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Last modified April 12 20:38 EDT 2024. Contains 371639 sequences. (Running on oeis4.)