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A146454
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0010 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 19, 35, 771, 1683, 28615, 78413, 3741521, 13151847, 1946971473, 8940112761, 2361147494637, 13880359808709, 6569185580421057, 49195861314648117, 52900985450007655737, 507372780878036963435
OFFSET
1,7
EXAMPLE
Maximal 8 X 8 example
.0.1.0.0.0.0.1.0
.1.1.0.0.0.0.1.1
.0.1.1.0.0.1.1.0
.0.0.1.0.0.1.0.0
.1.0.0.0.0.0.0.1
.1.1.0.0.0.0.1.1
.0.1.1.0.0.1.1.0
.0.1.0.0.0.0.1.0
CROSSREFS
Sequence in context: A166055 A333414 A146579 * A186405 A240238 A368833
KEYWORD
nonn
AUTHOR
STATUS
approved