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A147369
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0111-1100-0111 pattern in any orientation.
0
1, 1, 1, 1, 5, 1, 19, 13, 300, 253, 9196, 2685, 408268, 46561, 21554860
OFFSET
1,5
EXAMPLE
Maximal 8 X 8 example
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
.1.0.1.0.0.1.0.1
.1.0.1.0.0.1.0.1
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
CROSSREFS
Sequence in context: A146055 A286232 A147437 * A377879 A375363 A066480
KEYWORD
nonn
AUTHOR
STATUS
approved