A162105 Number of n X n binary arrays with rows and columns, considered as binary numbers, in strictly increasing order, and no more than 6 ones in any row or column.

2, 3, 15, 234, 10706, 1411450, 505051770, 417252778662, 673353370204496

Offset

1,1

Links

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

Crossrefs

Sequence in context: A087975 A162103 A162104 * A162106 A162107 A162108

Adjacent sequences: A162102 A162103 A162104 * A162106 A162107 A162108

Keyword

nonn

Author

R. H. Hardin, Jun 25 2009

Status

approved