A146791 - OEIS

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A146791

Number of n X n binary arrays with all ones connected only in a 0110-0100-1111 pattern in any orientation.

1, 1, 1, 17, 49, 129, 2513, 72929, 1541697, 32044977, 1793069393, 194582650081, 23560543717409, 3138929297030737

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Maximal 8 X 8 example

.1.1.1.1.0.0.0.1

.0.1.0.0.0.1.1.1

.0.1.1.0.0.1.0.1

.0.0.0.0.0.0.0.1

.0.0.0.0.0.0.0.0

.0.1.1.0.1.1.1.1

.0.0.1.0.0.0.1.0

.1.1.1.1.0.1.1.0

CROSSREFS

Sequence in context: A113867 A049737 A146871 * A126371 A342609 A146799

Adjacent sequences: A146788 A146789 A146790 * A146792 A146793 A146794

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved