A181033 Number of nX(n+2) binary matrices with no initial bit string in any row or column divisible by 4

1, 5, 41, 827, 36787, 3729091, 851302029, 439621976195, 512615852515459, 1350668111471923517, 8039144604242883698707, 108102244692016476122031505, 3283958267007000189206675439393, 225377046019121585326666765445484971

Offset

1,2

Comments

Superdiagonal 2 of A181031

Links

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

Example

Some solutions for 4X6
..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....1..1..0..1..0..1....1..1..0..1..0..1....1..1..0..1..0..1
..1..0..1..0..1..0....1..0..1..0..1..1....1..0..1..1..1..0....1..0..1..1..1..1

Crossrefs

Sequence in context: A076131 A003719 A363884 * A189997 A342439 A197173

Adjacent sequences: A181030 A181031 A181032 * A181034 A181035 A181036

Keyword

nonn

Author

R. H. Hardin Sep 30 2010

Status

approved