A162102 Number of n X n binary arrays with rows and columns, considered as binary numbers, in strictly increasing order, and no more than 3 ones in any row or column

2, 3, 15, 185, 3177, 70018, 1949177, 66731589, 2743349751, 132875510312

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Crossrefs

Sequence in context: A131612 A297421 A180723 * A087975 A162103 A162104

Adjacent sequences: A162099 A162100 A162101 * A162103 A162104 A162105

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved