A202468 Number of (n+2)X7 binary arrays with no more than two of any consecutive three bits set in any row or column

317179, 18374521, 1044865367, 58746383721, 3323590649777, 187820723381421, 10610932604054547, 599616560193259281, 33881738532796270907, 1914496303093962715299, 108180387260313623312899

Offset

1,1

Comments

Column 5 of A202471

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=3
..0..0..0..0..0..0..0....0..0..0..0..0..1..0....0..0..0..0..0..1..0
..0..0..0..1..0..1..1....0..0..0..1..0..0..0....0..0..0..1..0..1..0
..0..0..0..1..0..0..0....0..0..0..0..1..0..0....0..0..0..1..1..0..0
..0..0..0..0..0..0..1....0..0..0..0..1..0..0....0..0..0..0..0..0..0
..0..0..0..0..0..1..1....0..0..0..0..0..0..0....0..0..0..1..0..0..1

Crossrefs

Sequence in context: A309238 A153749 A186623 * A251528 A253341 A210317

Adjacent sequences: A202465 A202466 A202467 * A202469 A202470 A202471

Keyword

nonn

Author

R. H. Hardin Dec 19 2011

Status

approved