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A147354
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-0110-1111 pattern in any orientation.
0
1, 1, 1, 5, 1, 9, 9, 64, 169, 2060, 1751, 117702, 30379, 5432661, 2655229, 490197084, 609857434, 163861816417, 142845961897, 117181491908400, 48229913065428, 107790147306614349, 44573112130566379, 164640449018425801557
OFFSET
1,4
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
.1.0.0.0.0.0.0.1
.0.0.1.0.0.1.0.0
.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: A256559 A182498 A147406 * A134233 A100542 A324378
KEYWORD
nonn
AUTHOR
STATUS
approved