A186217 Number of (n+1)X8 0..2 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

353985, 213108423, 43035959317, 13767728347159, 3611859394076247

Offset: 1

Author

R. H. Hardin Feb 15 2011

Keywords

• nonn

Comments

Column 7 of A186218

Examples

			Some solutions for 3X8
..0..0..0..2..0..0..2..2....0..0..0..2..2..1..2..0....0..0..0..2..0..2..2..1
..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
..0..0..0..0..2..1..0..1....0..0..0..0..2..0..0..2....0..0..0..1..1..2..0..0