A162025 Number of n X n binary arrays with rows and columns, considered as binary numbers, in nondecreasing order, and all but the outermost 2 rows or columns zero

650, 11383, 172397, 2192133, 22691067, 194040649, 1399396798, 8685359465, 47251669088, 228988071503, 1002225544941, 4008405843433, 14796604769937, 50842319249797, 163801345402742, 497912302088881, 1435751686611354

Offset

4,1

Links

R. H. Hardin, Table of n, a(n) for n=4..64

Crossrefs

Sequence in context: A288142 A157915 A158639 * A251861 A035851 A229797

Adjacent sequences: A162022 A162023 A162024 * A162026 A162027 A162028

Keyword

nonn

Author

R. H. Hardin Jun 25 2009

Status

approved