A183309 Half the number of nX8 binary arrays with no element equal to a strict majority of its horizontal and vertical neighbors

13, 35, 452, 5700, 94217, 1447110, 22504107, 348871589, 5406312318, 83828453334, 1300167830235, 20168484726903, 312884691407215, 4853992391306949, 75303212625271575, 1168225180318165057, 18123347504407854750

Offset

1,1

Comments

Column 8 of A183312

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions with a(1,1)=0 for 8X4
..0..1..0..0....0..0..1..0....0..1..1..0....0..0..1..1....0..1..1..0
..1..0..1..1....1..1..0..1....1..0..0..1....1..1..0..0....1..0..0..1
..1..0..1..0....0..0..0..1....0..0..1..0....0..0..1..1....0..1..0..1
..0..1..0..1....1..1..1..0....1..1..0..1....1..1..0..0....1..0..1..0
..1..0..1..0....0..0..1..0....0..1..1..0....0..0..1..1....1..0..0..1
..1..0..0..1....1..0..0..1....1..0..1..0....1..1..0..0....0..1..1..0
..0..1..0..0....0..1..1..0....0..1..0..1....0..1..0..1....1..1..0..1
..1..0..1..1....1..0..0..1....1..0..1..0....0..1..0..1....0..0..1..0

Crossrefs

Sequence in context: A192145 A221592 A135172 * A272108 A034119 A054285

Adjacent sequences: A183306 A183307 A183308 * A183310 A183311 A183312

Keyword

nonn

Author

R. H. Hardin Jan 03 2011

Status

approved