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A146245
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Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 110-111-010 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 3, 3, 5, 5, 11, 11, 29, 29, 171, 171, 783, 783, 4399, 4399, 33371, 33371, 348951, 348951, 4490023, 4490023, 67743969, 67743969, 1262306965, 1262306965
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OFFSET
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1,7
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.1.1.0.0.0.0.1.1
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.1.0.0.0.0.1.0
.1.1.1.0.0.1.1.1
.1.1.0.0.0.0.1.1
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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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