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A116532 Number of singular n X n rational {0,1}-matrices with no zero rows or columns and with all rows distinct, up to permutation of rows. 17
0, 0, 3, 285, 50820, 23551920, 31898503077, 134251404794199 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
FORMULA
a(n) = A054780(n) - A088389(n).
CROSSREFS
Binary matrices with distinct rows and columns, various versions: A059202, A088309, A088310, A088616, A089673, A089674, A093466, A094000, A094223, A116532, A116539, A181230, A259763
Sequence in context: A139984 A057631 A058455 * A199644 A347138 A124357
KEYWORD
more,nonn
AUTHOR
Vladeta Jovovic, Apr 03 2006
STATUS
approved

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Last modified March 19 06:32 EDT 2024. Contains 370953 sequences. (Running on oeis4.)