A162098 Number of n X n symmetric binary arrays with rows, considered as binary numbers, in strictly increasing order, and no more than 8 ones in any row

2, 3, 9, 48, 438, 6774, 178263, 8064528, 627340987, 80943417078, 16532767172961, 4974573404684891, 2087470561522476478

Offset

1,1

Links

Table of n, a(n) for n=1..13.

Crossrefs

Sequence in context: A162095 A162096 A162097 * A162099 A307069 A255739

Adjacent sequences: A162095 A162096 A162097 * A162099 A162100 A162101

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved