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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

CROSSREFS

Sequence in context: A162040 A162041 A162042 * A016121 A216519 A245108

Adjacent sequences:  A162040 A162041 A162042 * A162044 A162045 A162046

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 25 2009

STATUS

approved

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Last modified May 26 04:43 EDT 2022. Contains 354074 sequences. (Running on oeis4.)