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A116977
Number of n X n rational {0,1}-matrices of determinant 0, up to row and column permutations.
1
1, 5, 28, 256, 4471, 187300, 22290203, 8267860926
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..8.
Miodrag Zivkovic,
Classification of small (0,1) matrices
, Linear Algebra and its Applications, 414 (2006), 310-346.
FORMULA
a(n) =
A002724
(n) -
A116976
(n). -
Max Alekseyev
, Feb 28 2010
CROSSREFS
Cf.
A046747
,
A002724
,
A116976
.
Sequence in context:
A121674
A306181
A362690
*
A362636
A238981
A163694
Adjacent sequences:
A116974
A116975
A116976
*
A116978
A116979
A116980
KEYWORD
nonn
,
more
AUTHOR
Vladeta Jovovic
, Apr 01 2006
EXTENSIONS
a(8) from
Alois P. Heinz
, Jun 30 2022
STATUS
approved
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Last modified March 28 21:57 EDT 2024. Contains 371254 sequences. (Running on oeis4.)