A186804 Number of (n+2)X9 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock

117671951, 47657171957, 19839195220290, 8263791225579948, 3439855711337907764

Offset

1,1

Comments

Column 7 of A186806

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 4X9
..0..1..1..0..0..0..0..1..0....0..1..1..0..1..0..1..0..1
..0..0..0..0..1..0..1..0..0....0..0..0..0..0..0..1..0..0
..0..0..0..0..0..0..1..1..1....0..0..0..0..0..0..1..0..1
..0..1..0..1..0..0..1..0..1....0..1..0..1..0..1..1..0..0

Crossrefs

Sequence in context: A206062 A157770 A195282 * A344632 A015380 A250458

Adjacent sequences: A186801 A186802 A186803 * A186805 A186806 A186807

Keyword

nonn

Author

R. H. Hardin Feb 26 2011

Status

approved