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A162060
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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 5 ones in any row or column
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0
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2, 6, 18, 100, 794, 10414, 190428, 4659387, 143848365, 5430367157, 242216815664, 12631766954130, 754181337363809
(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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