A181041 Number of nX(n+2) binary matrices with no initial bit string in any row or column divisible by 6

1, 6, 41, 2128, 116416, 38367065, 17214692429, 35303269554487, 126153392725718061, 1662975394096566451171, 45555313556475090260636006

Offset

1,2

Comments

Superdiagonal 2 of A181039

Links

Table of n, a(n) for n=1..11.

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..1..1..0..0..1....1..0..0..0..1..0....1..0..1..0..0..0....1..0..1..1..0..1
..1..1..1..1..1..1....1..0..1..0..1..1....1..0..1..1..0..1....1..0..1..1..1..1
..1..0..1..0..1..1....1..0..0..0..0..1....1..1..1..1..1..0....1..0..1..0..0..0

Crossrefs

Sequence in context: A007130 A075000 A112960 * A109856 A249135 A250387

Adjacent sequences: A181038 A181039 A181040 * A181042 A181043 A181044

Keyword

nonn

Author

R. H. Hardin Sep 30 2010

Status

approved