A208002 Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 1 and 1 1 0 vertically.

2, 16, 92, 536, 7016, 90232, 3569728, 101519408, 13171648732, 783070626724, 349693561626416, 41247666769702640, 65777806787688875844, 14782056897493046845072, 86537979599825962734398012

Offset: 1

Author

R. H. Hardin Feb 22 2012

Keywords

• nonn

Comments

Diagonal of A208007

Examples

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