A147178 - OEIS

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A147178

Number of n X n binary arrays with all ones connected only in a 1000-1111-0101 pattern in any orientation.

1, 1, 1, 17, 53, 329, 3195, 60697, 1822001, 62512113, 3196151109, 269695770307, 35398633644551

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Maximal 8 X 8 example

.0.1.0.1.0.0.0.0

.1.1.1.1.0.0.0.0

.1.0.0.0.0.0.0.0

.0.1.1.0.0.0.0.0

.1.1.0.1.1.0.1.1

.0.1.0.1.0.0.1.0

.1.1.0.1.1.0.1.1

.0.0.1.1.0.1.1.0

CROSSREFS

Sequence in context: A147255 A146737 A146839 * A146642 A146610 A146847

Adjacent sequences: A147175 A147176 A147177 * A147179 A147180 A147181

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved