A146815 - OEIS

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A146815

Number of n X n binary arrays with all ones connected only in a 1000-1110-0111 pattern in any orientation.

1, 1, 1, 17, 65, 429, 5631, 146823, 4351701, 186793381, 13761626501, 1695235337657

(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

.0.1.1.1.0.1.1.1

.1.1.1.0.1.1.1.0

.1.0.0.0.1.0.0.1

.0.1.1.1.0.1.1.1

.1.1.1.0.1.1.1.0

.1.0.0.1.0.0.0.1

.0.1.1.1.0.1.1.1

.1.1.1.0.1.1.1.0

CROSSREFS

Sequence in context: A146807 A156570 A147231 * A360818 A216143 A082614

Adjacent sequences: A146812 A146813 A146814 * A146816 A146817 A146818

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved