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A162043
Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 9 ones in any row
0
2, 5, 17, 86, 698, 9551, 226592, 9471845, 705154187, 93580638024, 21617123994739, 8359355039654246, 5068693922149271436
OFFSET
1,1
CROSSREFS
Sequence in context: A162040 A162041 A162042 * A016121 A216519 A245108
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 25 2009
STATUS
approved