A183398 - OEIS

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

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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