A183461 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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