A181035 Number of nX(n+4) binary matrices with no initial bit string in any row or column divisible by 4.

1, 13, 239, 10897, 1095851, 250916131, 129422885699, 150985649174085, 397743903151933881, 2367568471466798904283, 31835463913062005686452609, 967121732734103600475330208107, 66372797708066134019183673485369717

Offset: 1

Author

R. H. Hardin Sep 30 2010

Keywords

• nonn

Comments

Superdiagonal 4 of A181031

Examples

			Some solutions for 4X8
..1..1..1..1..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..0..1..0....1..0..1..0..1..0..1..0....1..0..1..0..1..0..1..0
..1..1..0..1..0..1..0..1....1..1..0..1..0..1..0..1....1..1..0..1..0..1..0..1
..1..0..1..0..1..0..1..0....1..0..1..0..1..0..1..1....1..0..1..0..1..1..1..0
		

Links

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