A230190 Number of 7Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).

0, 8193, 1223799, 756450105, 400233701367, 218117038953009, 117863748242661711, 63824360296979648967, 34546668873829672101987, 18700870126913632045893531, 10123031708751736005223316745

Offset: 1

Author

R. H. Hardin, Oct 11 2013

Keywords

• nonn

Comments

Row 7 of A230184

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..23