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A285180
Normalized number of n^2 X n^2 Sudokus.
3
1, 1, 12, 18383222420692992
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OFFSET
0,3
COMMENTS
Equals
A107739
(n)/((n^2)!).
Note that although the two Yordzhev papers have similar titles, they are different papers.
LINKS
Table of n, a(n) for n=0..3.
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
Cf.
A107739
,
A285178
,
A285179
.
Sequence in context:
A175906
A144546
A165970
*
A081357
A127708
A094896
Adjacent sequences:
A285177
A285178
A285179
*
A285181
A285182
A285183
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Apr 14 2017
STATUS
approved
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Last modified July 28 16:27 EDT 2024. Contains 374698 sequences. (Running on oeis4.)