A162063 Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and no more than 8 ones in any row or column

2, 6, 18, 100, 794, 11268, 264083, 11030649, 803072115, 100105549549, 19932697314369, 5965765549253249

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Crossrefs

Sequence in context: A162060 A162061 A162062 * A162064 A162056 A347727

Adjacent sequences: A162060 A162061 A162062 * A162064 A162065 A162066

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved