A183398 Half the number of n X n binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors.

1, 2, 6, 242, 8366, 938450, 202832490, 99698985800, 111178591581730, 269624072418134792, 1460886644336095222074, 17525035013309709286061250, 464454865764560721784272271230, 27268004201542696999749244619238722

Offset

1,2

Comments

Diagonal of A183402.

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

Some solutions with a(1,1)=0 for 4 X 4
..0..1..0..0....0..0..1..0....0..0..0..0....0..1..0..0....0..1..1..0
..0..1..1..0....0..1..1..0....0..1..1..1....0..1..1..0....0..1..1..0
..0..1..1..0....0..1..0..0....0..1..1..0....0..1..1..0....1..1..0..0
..0..0..1..0....0..1..0..1....0..0..1..0....0..1..0..0....0..0..1..1

Crossrefs

Cf. A183402.

Sequence in context: A100359 A206033 A181772 * A052342 A199125 A232696

Adjacent sequences: A183395 A183396 A183397 * A183399 A183400 A183401

Keyword

nonn

Author

R. H. Hardin, Jan 04 2011

Status

approved