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A162064
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Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and no more than 9 ones in any row or column
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0
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2, 6, 18, 100, 794, 11268, 264083, 11030649, 813916625, 107746920222, 24945674297719, 9651792274718292
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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