A186803 Number of (n+2)X8 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock

15016660, 3147544633, 675297305236, 144968185692408, 31102381776833744, 6674101867860962707

Offset

1,1

Comments

Column 6 of A186806

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 4X8
..0..1..1..0..1..0..0..0....0..1..1..1..1..0..1..1....0..1..1..1..1..0..0..0
..0..0..0..0..1..0..0..1....0..0..0..0..0..0..0..0....0..0..0..0..0..0..1..1
..0..0..0..0..1..0..1..0....0..0..0..0..1..0..0..0....0..0..0..0..1..0..1..0
..0..1..0..1..0..1..1..0....0..1..0..1..0..0..1..1....0..1..0..1..1..0..0..0

Crossrefs

Sequence in context: A227286 A125565 A204313 * A221561 A221559 A104334

Adjacent sequences: A186800 A186801 A186802 * A186804 A186805 A186806

Keyword

nonn

Author

R. H. Hardin Feb 26 2011

Status

approved