A146650 - OEIS

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A146650

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

1, 1, 1, 17, 57, 265, 2569, 62981, 1534149, 39874393, 1805421661, 154427138595, 18701005144079

(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

.1.1.1.1.0.1.0.1

.0.1.0.0.0.1.1.1

.1.1.0.0.0.0.0.1

.0.0.0.0.0.0.0.1

.0.0.0.0.0.0.0.0

.1.1.1.1.0.1.1.0

.0.1.0.0.0.1.0.0

.1.1.0.1.1.1.1.0

CROSSREFS

Sequence in context: A117390 A141841 A146682 * A147131 A147162 A146690

Adjacent sequences: A146647 A146648 A146649 * A146651 A146652 A146653

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved