A147157 - OEIS

A147157

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.

1, 1, 1, 1, 1, 3, 11, 27, 63, 325, 2169, 14949, 107269

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OFFSET

1,6

LINKS

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.1.0

.0.0.0.0.1.1.1.0

.0.0.0.1.0.0.1.1

.0.0.0.1.0.0.0.1

.0.0.1.1.1.0.0.0

.0.0.0.0.1.1.0.0

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved