A162133 Number of n X n symmetric 0..8 arrays with rows, considered as 9-ary numbers, in strictly increasing order

9, 360, 92640, 161285760, 2017447626240, 189005833196636160, 136458103771080331223040, 775113475209991141795962716160, 35190097760167101079770524663781130240

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Crossrefs

Sequence in context: A063068 A130558 A132593 * A197179 A344338 A195888

Adjacent sequences: A162130 A162131 A162132 * A162134 A162135 A162136

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved