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.

0, 0, 3, 285, 50820, 23551920, 31898503077, 134251404794199

Offset

1,3

Links

Table of n, a(n) for n=1..8.

Formula

a(n) = A054780(n) - A088389(n).

Crossrefs

Cf. A000410, A116506, A116527.

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

Adjacent sequences: A116529 A116530 A116531 * A116533 A116534 A116535

Keyword

more,nonn

Author

Vladeta Jovovic, Apr 03 2006

Status

approved