A183440 Number of nX7 binary arrays with every 1 having exactly one king-move neighbor equal to 1

13, 330, 2221, 26243, 329520, 3352423, 37904950, 428516444, 4696093253, 52414238887, 584027763963, 6479434085007, 72103072031942, 801943134829675, 8914321278709809, 99138406634724651, 1102410186514940047

Offset

1,1

Comments

Column 7 of A183442

Links

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

Example

Some solutions for 3X7
..1..0..0..0..0..0..0....0..0..1..1..0..1..0....1..1..0..0..0..1..0
..1..0..0..0..0..0..0....1..0..0..0..0..1..0....0..0..0..0..1..0..0
..0..0..0..0..1..1..0....1..0..0..0..0..0..0....1..1..0..0..0..0..0

Crossrefs

Sequence in context: A253458 A012492 A296395 * A296018 A348087 A142543

Adjacent sequences: A183437 A183438 A183439 * A183441 A183442 A183443

Keyword

nonn

Author

R. H. Hardin Jan 04 2011

Status

approved