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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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
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
Sequence in context: A121674 A306181 A362690 * A362636 A238981 A163694
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 May 24 23:50 EDT 2024. Contains 372782 sequences. (Running on oeis4.)