A146264 - OEIS

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A146264

Number of n X n binary arrays with all ones connected only in a 110-111-110 pattern in any orientation.

1, 1, 5, 17, 45, 281, 4672, 78267, 1571678, 52679419, 3071977536, 240721783237, 27403978688452, 4744390760050525, 1239071516389632223

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

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Maximal 8 X 8 example

.0.1.1.1.0.1.1.1

.0.0.1.0.0.0.1.0

.1.1.0.0.0.0.0.0

.1.1.1.0.0.0.1.1

.1.1.0.1.0.1.1.1

.0.0.1.1.1.0.1.1

.0.0.1.1.1.0.0.0

CROSSREFS

Sequence in context: A147193 A271302 A147043 * A146216 A046787 A003295

Adjacent sequences: A146261 A146262 A146263 * A146265 A146266 A146267

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved