A188500 Number of n X n binary arrays without the pattern 0 1 0 diagonally, vertically or horizontally.

2, 16, 229, 5626, 317751, 47153387, 15602080066, 10679333746605, 15965188461370862, 54469837118110826481, 418222453639358665952917, 7076429422309098758072976354, 264209106726567934754362229986426

Offset: 1

Author

R. H. Hardin Apr 02 2011

Keywords

• nonn

Comments

Diagonal of A188508

Examples

			Some solutions for 3X3
..1..1..1....1..1..1....1..0..1....0..0..0....0..0..1....0..0..1....1..0..0
..1..1..1....0..0..0....1..0..0....1..0..0....0..0..0....0..0..1....1..0..1
..0..0..1....1..1..1....0..0..0....1..1..1....0..0..0....1..1..0....1..1..1