A205746 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.

14, 284, 8926, 383290, 28155907, 2917623614, 528507252157, 138111752968498, 64850139038419406, 44000031319042068352

Offset: 1

Author

R. H. Hardin Jan 30 2012

Keywords

• nonn

Comments

Diagonal of A205753

Examples

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