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A162133 Number of n X n symmetric 0..8 arrays with rows, considered as 9-ary numbers, in strictly increasing order 0
9, 360, 92640, 161285760, 2017447626240, 189005833196636160, 136458103771080331223040, 775113475209991141795962716160, 35190097760167101079770524663781130240 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 18 12:13 EDT 2021. Contains 347527 sequences. (Running on oeis4.)