A147217 - OEIS

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A147217

Number of n X n binary arrays with all ones connected only in a 1100-0111-0101 pattern in any orientation.

1, 1, 1, 17, 49, 237, 2821, 72631, 1759597, 48580733, 2684705291, 263944603423

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Maximal 8 X 8 example

.0.1.0.1.0.0.0.0

.0.1.1.1.0.0.1.1

.1.1.0.0.0.0.1.0

.0.0.0.0.0.1.1.1

.0.0.0.0.0.1.0.0

.0.0.1.1.0.0.1.1

.1.1.1.0.1.1.1.0

.1.0.1.0.1.0.1.0

CROSSREFS

Sequence in context: A146799 A147201 A146775 * A147051 A146855 A146666

Adjacent sequences: A147214 A147215 A147216 * A147218 A147219 A147220

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved