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A151808
Number of n X n binary arrays with rows, considered as binary numbers, in strictly increasing order, and columns, considered as binary numbers, in nondecreasing order, and no more than 8 ones in any row or column.
0
2, 4, 21, 330, 14610, 1820715, 653629616, 696496706166, 2213581411047749, 19866756948798084481
OFFSET
1,1
CROSSREFS
Sequence in context: A151805 A151806 A151807 * A151809 A151801 A284920
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 27 2009
STATUS
approved