login
A186802
Number of (n+2)X7 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock
1
1916364, 207885695, 22986441710, 2543130767720, 281222068231208, 31102381776833744, 3439855711337907764, 380438338036924395628, 42075486550662042557800, 4653437870679555570938770
OFFSET
1,1
COMMENTS
Column 5 of A186806
LINKS
EXAMPLE
Some solutions for 4X7
..0..1..1..1..1..0..0....0..0..1..1..1..0..1....1..1..1..1..0..1..1
..0..0..0..1..0..1..0....0..0..0..1..1..1..1....0..0..0..1..0..0..0
..1..0..0..1..1..0..1....1..0..0..1..0..1..1....1..0..0..0..1..0..1
..0..0..0..1..1..1..1....0..0..0..0..0..1..0....0..0..0..1..1..0..0
CROSSREFS
Sequence in context: A133542 A215568 A323343 * A179226 A166002 A285390
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 26 2011
STATUS
approved