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A147430
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1010-1111-0101 pattern in any orientation.
0
1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 25, 25, 89, 89, 469, 469, 5217, 5217, 82459, 82459, 1354121, 1354121, 28702995, 28702995, 915889909, 915889909
OFFSET
1,9
EXAMPLE
Maximal 9 X 9 example
.0.0.0.0.0.0.0.0.0
.1.0.1.0.0.0.1.0.1
.1.1.1.1.0.1.1.1.1
.0.1.0.1.0.1.0.1.0
.0.0.0.0.0.0.0.0.0
.0.1.0.1.0.1.0.1.0
.1.1.1.1.0.1.1.1.1
.1.0.1.0.0.0.1.0.1
.0.0.0.0.0.0.0.0.0
CROSSREFS
Sequence in context: A147499 A146591 A146868 * A147462 A146367 A014725
KEYWORD
nonn
AUTHOR
STATUS
approved