A183461 Number of (n+4)X8 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s

3, 19, 69, 199, 1577, 6125, 20625, 153353, 622193, 2445793, 16246733, 68704747, 294587103, 1786187735, 7815231605, 35323362355, 200851434261, 903548912739, 4218720642855, 22940107065767, 105479993585991, 502480038340453

Offset

1,1

Comments

Column 4 of A183465

Links

R. H. Hardin, Table of n, a(n) for n = 1..164

Example

Some solutions for 7X8
..0..0..0..0..1..0..0..0....0..0..0..0..0..0..0..0....0..0..1..0..0..0..0..0
..0..0..0..1..1..1..0..0....0..0..1..1..1..0..0..0....0..1..1..1..0..0..0..0
..0..0..1..0..0..0..1..0....0..1..0..1..0..1..0..0....1..0..0..0..1..0..0..0
..0..1..1..0..0..1..1..0....1..1..0..0..0..1..1..0....1..1..0..1..1..0..0..0
..0..1..0..0..0..1..0..0....0..1..0..1..0..1..0..0....1..0..0..0..1..0..0..0
..0..0..1..1..1..0..0..0....0..0..1..1..1..0..0..0....0..1..1..1..0..0..0..0
..0..0..0..1..0..0..0..0....0..0..0..0..0..0..0..0....0..0..1..0..0..0..0..0

Crossrefs

Sequence in context: A064056 A211061 A059599 * A095662 A090698 A350713

Adjacent sequences: A183458 A183459 A183460 * A183462 A183463 A183464

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved