A183553 Number of nX8 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors

129, 113841, 33169105, 10339213765, 3221377019429, 1003889179688773, 313000943874975793, 97587614786720584857

Offset

1,1

Comments

Column 8 of A183554

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for 3X8
..0..0..0..2..2..1..2..2....0..0..0..0..1..0..2..2....0..0..0..1..1..0..0..0
..0..0..0..2..2..1..1..2....0..0..0..1..1..0..0..2....0..0..0..0..0..0..0..0
..0..0..0..2..2..2..1..2....0..0..0..0..1..1..0..0....0..0..0..2..2..2..2..0

Crossrefs

Sequence in context: A143006 A176368 A283535 * A242229 A351137 A138586

Adjacent sequences: A183550 A183551 A183552 * A183554 A183555 A183556

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved