A162049 Number of n X n binary arrays with rows and columns, considered as binary numbers, in nondecreasing order, and no more than 7 ones in any row or column.

2, 7, 45, 650, 24520, 2625117, 836488618, 782125292287, 1952379392788756

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Crossrefs

Sequence in context: A162046 A162047 A162048 * A162050 A162051 A089006

Adjacent sequences: A162046 A162047 A162048 * A162050 A162051 A162052

Keyword

nonn

Author

R. H. Hardin, Jun 25 2009

Status

approved