A187423 Number of (n+1)X6 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.

15055, 319792, 5254072, 139898890, 2868461180, 72355701549

Offset: 1

Author

R. H. Hardin Mar 09 2011

Keywords

• nonn

Comments

Column 5 of A187425

Examples

			Some solutions for 3X6
..1..0..2..2..0..0....1..0..1..2..0..0....1..1..1..0..1..0....0..2..2..2..0..0
..2..0..0..1..1..0....1..0..1..1..0..2....0..0..1..1..2..1....0..0..1..2..0..0
..2..0..2..2..0..0....0..0..1..0..0..2....1..0..2..1..1..1....0..1..1..1..0..1