A162108 Number of n X n binary arrays with rows and columns, considered as binary numbers, in strictly increasing order, and no more than 9 ones in any row or column

2, 3, 15, 234, 10706, 1411450, 539124281, 607445721710, 2067567866431155, 21511034198042208456

Offset

1,1

Links

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

Crossrefs

Sequence in context: A162105 A162106 A162107 * A162100 A330871 A203966

Adjacent sequences: A162105 A162106 A162107 * A162109 A162110 A162111

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved