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A162054 Number of nXn symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and an odd number of ones in each row 0
1, 1, 3, 8, 29, 201, 2045, 42099, 1463799, 96669398, 11401254845, 2496036627878, 998423279638638, 740614345658818495, 1016897944485885507894 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Sequence in context: A063839 A192744 A130470 * A067354 A148877 A148878

Adjacent sequences:  A162051 A162052 A162053 * A162055 A162056 A162057

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Jun 25 2009

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Last modified February 16 02:30 EST 2012. Contains 205860 sequences.