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A162076
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Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an odd number of ones in each row
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0
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1, 1, 4, 8, 40, 226, 2579, 49498, 1765630, 113965238, 13490574157, 2926835209126, 1169086294542192, 862917161990013829, 1181920894330563626871
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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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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