A186800 Number of (n+2)X5 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock

31204, 906615, 26628581, 782510382, 22986441710, 675297305236, 19839195220290, 582841090096150, 17122871714488347, 503040754965075614, 14778477587659456400, 434166411941361179685, 12755067189320222783892

Offset

1,1

Comments

Column 3 of A186806

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 4X5
..1..1..1..1..1....0..0..1..1..0....0..0..1..1..0....0..1..1..0..0
..0..0..0..0..0....0..0..0..1..1....0..0..0..0..1....0..0..0..1..0
..1..0..1..1..0....0..0..1..1..0....0..0..1..1..1....1..0..0..1..1
..1..1..0..1..1....0..0..0..0..1....1..1..0..0..0....0..0..0..1..1

Crossrefs

Sequence in context: A151815 A331675 A285695 * A230753 A205419 A345576

Adjacent sequences: A186797 A186798 A186799 * A186801 A186802 A186803

Keyword

nonn

Author

R. H. Hardin Feb 26 2011

Status

approved