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A147498
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0110-0111 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 9, 13, 169, 289, 1635, 3769, 26681, 58223, 2298509, 6525751
OFFSET
1,7
EXAMPLE
Maximal 8 X 8 example
.1.0.0.0.0.0.0.1
.1.1.1.0.0.1.1.1
.1.1.1.0.0.1.1.1
.0.0.1.0.0.1.0.0
.1.0.0.0.0.0.0.1
.1.1.1.0.0.1.1.1
.1.1.1.0.0.1.1.1
.0.0.1.0.0.1.0.0
CROSSREFS
Sequence in context: A108748 A116106 A123813 * A115445 A131602 A004474
KEYWORD
nonn
AUTHOR
STATUS
approved