A200578 Number of nX7 0..2 arrays with no average of any element and its horizontal and vertical neighbors equal to one.

260, 163706, 70594592, 32523513414, 15075017283404, 6967106819900592

Offset

1,1

Comments

Column 7 of A200579

Links

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

Example

Some solutions for n=3
..0..0..0..2..0..0..1....0..0..0..1..1..2..2....0..0..0..2..2..1..0
..0..0..0..1..1..0..1....0..0..2..1..2..1..2....0..0..0..2..2..0..1
..0..0..0..0..2..0..0....0..0..0..0..2..2..2....0..0..0..1..0..0..0

Crossrefs

Sequence in context: A003734 A216940 A395713 * A383853 A200808 A350084

Adjacent sequences: A200575 A200576 A200577 * A200579 A200580 A200581

Keyword

nonn

Author

R. H. Hardin, Nov 19 2011

Status

approved