A116532 - OEIS

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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

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

NODES