A183581 Half the number of nX6 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.

38, 12024, 1282814, 149355515, 17195908538, 1988200387149, 229716738097391, 26548571098836075, 3068082753691026342, 354569738678873849813, 40976532204608285387767, 4735538672860090875422373

Offset: 1

Author

R. H. Hardin Jan 05 2011

Keywords

• nonn

Comments

Column 6 of A183584

Examples

			Some solutions with a(1,1)<=1 for 3X6
..0..0..2..2..1..3....0..0..0..3..3..3....0..0..1..0..0..0....0..0..2..2..3..1
..0..1..1..1..1..3....0..2..0..3..3..2....0..1..1..1..0..0....0..0..0..3..3..1
..1..1..1..2..2..2....0..2..2..2..3..2....1..1..1..1..1..1....0..0..2..2..3..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..18