A201536 Number of nX5 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.

9, 175, 3354, 91425, 2446147, 61807736, 1408677515, 28646055184, 523398227137, 8686880778087, 132361720458239, 1868645862989467, 24631940812325029, 305098771555173655, 3569810381726216867, 39630824798203404663

Offset: 1

Author

R. H. Hardin Dec 02 2011

Keywords

• nonn

Comments

Column 5 of A201539

Examples

			Some solutions for n=4
..0..0..2..2..2....0..1..1..1..2....0..1..1..1..2....0..0..0..0..1
..1..1..0..1..1....0..1..1..2..2....0..1..2..2..2....0..0..2..2..1
..2..2..0..1..1....1..0..1..1..1....2..1..1..2..2....0..2..0..0..1
..2..2..1..1..1....1..0..2..2..2....2..2..1..1..1....2..2..0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..160