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A146910
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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 21, 33, 187, 315, 2369, 4615, 64775, 147707, 4198889, 11294757, 484939233, 1526217059, 94525856839, 346917020079, 34819307110751, 149345046116449, 24639152995360273, 123617463688011623
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OFFSET
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1,9
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LINKS
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EXAMPLE
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Maximal 9 X 9 example
.0.1.0.0.0.0.0.1.0
.1.1.1.0.0.0.1.1.1
.0.1.1.1.0.1.1.1.0
.0.0.1.0.0.0.1.0.0
.0.0.0.0.0.0.0.0.0
.0.0.1.0.0.0.1.0.0
.0.1.1.1.0.1.1.1.0
.1.1.1.0.0.0.1.1.1
.0.1.0.0.0.0.0.1.0
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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