A181016 Number of nX(n+5) binary matrices with rows and columns each in strictly increasing order as binary numbers and every 0 adjacent to a 1 and every 1 adjacent to a 0

0, 0, 0, 0, 0, 0, 38, 17807, 10896780, 9903117503, 18595256962681

Offset

1,7

Comments

Superdiagonal 5 of A181011

Links

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

Example

Some solutions for 7X12
..0..1..1..1..1..1..1..1..1..1..1..1....0..1..1..1..1..1..1..1..1..1..1..1
..1..0..0..0..0..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0..0..0..0..0
..1..0..0..1..1..1..1..1..1..1..1..1....1..0..0..1..1..1..1..1..1..1..1..1
..1..0..1..0..0..0..0..0..0..1..1..1....1..0..1..0..0..0..0..0..0..1..1..1
..1..0..1..0..0..1..1..1..1..0..0..0....1..0..1..0..0..1..1..1..1..0..0..0
..1..0..1..0..1..0..0..1..1..0..0..1....1..0..1..0..1..0..0..1..1..0..1..1
..1..0..1..0..1..0..1..0..1..0..1..0....1..0..1..0..1..0..1..0..1..0..0..1

Crossrefs

Sequence in context: A145122 A134182 A110017 * A103479 A036174 A162458

Adjacent sequences: A181013 A181014 A181015 * A181017 A181018 A181019

Keyword

nonn

Author

R. H. Hardin Sep 30 2010

Status

approved