A183583 Half the number of nX8 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors

194, 354615, 171459557, 92915045150, 49526167251643, 26548571098836075, 14217486118795912134

Offset

1,1

Comments

Column 8 of A183584

Links

Table of n, a(n) for n=1..7.

Example

Some solutions with a(1,1)<=1 for 3X8
..0..0..0..0..1..1..0..0....0..0..0..3..3..0..0..0....0..0..0..0..0..0..3..3
..0..0..0..1..1..1..1..1....0..0..0..0..3..0..0..2....0..0..0..1..0..3..3..3
..0..0..0..1..1..0..0..1....0..0..0..0..3..0..0..2....0..0..0..1..1..1..1..1

Crossrefs

Sequence in context: A281807 A220160 A333875 * A296893 A045073 A204811

Adjacent sequences: A183580 A183581 A183582 * A183584 A183585 A183586

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved