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A147393
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1000-1111-0001-0001 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 1, 1, 13, 19, 229, 391, 2411, 4925
OFFSET
1,9
EXAMPLE
Maximal 9 X 9 example
.1.0.0.0.0.0.0.0.1
.1.0.0.0.0.0.0.0.1
.1.1.1.1.0.1.1.1.1
.0.0.0.1.0.1.0.0.0
.1.0.0.1.0.1.0.0.1
.1.0.0.0.0.0.0.0.1
.1.1.1.1.0.1.1.1.1
.0.0.0.1.0.1.0.0.0
.0.0.0.1.0.1.0.0.0
CROSSREFS
Sequence in context: A241246 A153266 A166664 * A088187 A146047 A343034
KEYWORD
nonn
AUTHOR
STATUS
approved