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A162045
Number of n X n binary arrays with rows and columns, considered as binary numbers, in nondecreasing order, and no more than 3 ones in any row or column
0
2, 7, 45, 435, 6219, 123016, 3178802, 102907436, 4049382855, 189346451256
OFFSET
1,1
CROSSREFS
Sequence in context: A223001 A066612 A098637 * A326878 A153549 A348880
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 25 2009
STATUS
approved