A181032 Number of nX(n+1) binary matrices with no initial bit string in any row or column divisible by 4.

1, 3, 17, 227, 6743, 454385, 69050253, 23720149995, 18403310404291, 32260116141540213, 127750070550172845235, 1142905840646183024996181, 23099457587377397021217958619, 1054727887880873003123899368746005

Offset: 1

Author

R. H. Hardin Sep 30 2010

Keywords

• nonn

Comments

Superdiagonal 1 of A181031

Examples

			Some solutions for 4X5
..1..1..1..1..1....1..1..1..1..1....1..1..1..1..1....1..1..1..1..1
..1..0..1..0..1....1..0..1..0..1....1..0..1..0..1....1..0..1..0..1
..1..1..0..1..0....1..1..0..1..0....1..1..0..1..0....1..1..0..1..0
..1..0..1..0..1....1..0..1..1..1....1..1..1..0..1....1..1..1..1..1
		

Links

• R. H. Hardin, Table of n, a(n) for n=1..22