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A162096
Number of n X n symmetric binary arrays with rows, considered as binary numbers, in strictly increasing order, and no more than 6 ones in any row.
0
2, 3, 9, 48, 438, 6774, 171886, 6464276, 340763756, 23324861005, 2003650727692, 210877340300876
OFFSET
1,1
CROSSREFS
Sequence in context: A316916 A162094 A162095 * A162097 A162098 A162099
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 25 2009
STATUS
approved