A116507 Number of singular n X n rational {0,1}-matrices with no zero rows or columns.

0, 1, 91, 18943, 12483601, 28530385447, 235529139302185, 7183142489571818623

Offset

1,3

Links

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

Formula

a(n) = A048291(n) - A055165(n).

Crossrefs

Cf. A000410, A116506, A116527, A116532.

Sequence in context: A168624 A131442 A319370 * A083828 A348088 A157802

Adjacent sequences: A116504 A116505 A116506 * A116508 A116509 A116510

Keyword

more,nonn

Author

Vladeta Jovovic, Apr 03 2006

Status

approved