A162053 Number of n X n binary arrays with rows and columns, considered as binary numbers, in nondecreasing order, and an even number of ones in each row or column.

1, 2, 3, 12, 97, 2116, 143722, 31089626, 21981849737, 51209031818644

Offset

1,2

Links

Table of n, a(n) for n=1..10.

Crossrefs

Sequence in context: A074179 A012586 A088223 * A162075 A333166 A245584

Adjacent sequences: A162050 A162051 A162052 * A162054 A162055 A162056

Keyword

nonn

Author

R. H. Hardin, Jun 25 2009

Status

approved