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A162054
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Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and an odd number of ones in each row
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0
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1, 1, 3, 8, 29, 201, 2045, 42099, 1463799, 96669398, 11401254845, 2496036627878, 998423279638638, 740614345658818495, 1016897944485885507894
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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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