A199652 Number of nX5 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors.

41, 8037, 1357484, 230693158, 39209840355, 6663970316970, 1132589231853096, 192491652879392515, 32715334199617664326, 5560205218374521415185, 944996676143473092852595, 160608949278619262130353064

Offset: 1

Author

R. H. Hardin Nov 08 2011

Keywords

• nonn

Comments

Column 5 of A199655

Examples

			Some solutions for n=3
..0..0..0..0..1....0..0..0..0..0....0..0..0..1..2....0..0..0..0..0
..0..1..1..2..2....0..1..1..1..1....1..1..2..1..2....1..2..2..1..1
..0..2..2..2..0....2..1..2..2..0....1..0..2..2..1....0..2..1..2..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200