A146783 - OEIS

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A146783

Number of n X n binary arrays with all ones connected only in a 0100-1100-1111 pattern in any orientation.

1, 1, 1, 17, 57, 369, 5039, 105411, 2937697, 116344821, 7465413345, 762264403505, 114422662087491

(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

.1.1.1.1.0.0.1.1

.1.1.0.0.0.1.1.1

.0.1.0.0.1.0.0.1

.0.0.0.0.1.0.0.1

.1.0.1.1.1.0.0.0

.1.0.0.1.1.0.1.0

.1.1.1.0.0.0.1.1

.1.1.0.0.1.1.1.1

CROSSREFS

Sequence in context: A147162 A146690 A146437 * A146570 A147209 A147239

Adjacent sequences: A146780 A146781 A146782 * A146784 A146785 A146786

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved