A162054 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

1, 1, 3, 8, 29, 201, 2045, 42099, 1463799, 96669398, 11401254845, 2496036627878, 998423279638638, 740614345658818495, 1016897944485885507894

Offset

1,3

Links

Table of n, a(n) for n=1..15.

Crossrefs

Sequence in context: A182117 A207828 A208678 * A289486 A245361 A247340

Adjacent sequences: A162051 A162052 A162053 * A162055 A162056 A162057

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved