A162070 Number of n X n binary arrays with rows and columns, considered as graycode numbers, in nondecreasing order, and no more than 6 ones in any row or column.

2, 8, 58, 926, 36676, 4001456, 1180028739, 842249882008

Offset

1,1

Links

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

Crossrefs

Sequence in context: A191603 A162068 A162069 * A162071 A162072 A162073

Adjacent sequences: A162067 A162068 A162069 * A162071 A162072 A162073

Keyword

nonn

Author

R. H. Hardin, Jun 25 2009

Status

approved