A183580 Half the number of nX5 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.

14, 2216, 110674, 5987795, 320224986, 17195908538, 922710498351, 49526167251643, 2658141294593252, 142669482408162261, 7657427974138825496, 410994055177191194749, 22059119691987705997667, 1183970555622672309839445

Offset: 1

Author

R. H. Hardin Jan 05 2011

Keywords

• nonn

Comments

Column 5 of A183584

Examples

			Some solutions with a(1,1)<=1 for 3X5
..0..1..1..0..1....0..0..1..1..1....0..0..0..0..2....0..0..1..1..3
..0..0..0..0..1....0..1..0..0..1....0..0..0..3..2....2..0..1..1..3
..0..0..0..0..1....0..1..0..1..1....1..1..0..3..3....2..0..0..3..3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..135