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A146695
Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-1100-0111 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 9, 9, 23, 23, 49, 49, 265, 265, 1763, 1763
OFFSET
1,11
EXAMPLE
Maximal 11 X 11 example
.0.0.1.1.0.0.0.1.1.0.0
.0.0.1.1.1.0.1.1.1.0.0
.1.1.0.0.1.0.1.0.0.1.1
.1.1.0.0.1.0.1.0.0.1.1
.0.1.1.1.0.0.0.1.1.1.0
.0.0.0.0.0.0.0.0.0.0.0
.0.1.1.1.0.0.0.1.1.1.0
.1.1.0.0.1.0.1.0.0.1.1
.1.1.0.0.1.0.1.0.0.1.1
.0.0.1.1.1.0.1.1.1.0.0
.0.0.1.1.0.0.0.1.1.0.0
CROSSREFS
Sequence in context: A146911 A146250 A232023 * A146442 A147128 A147214
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved