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A146584
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0100-1100-0111 pattern in any orientation.
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0
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1, 1, 1, 1, 1, 1, 9, 15, 53, 69, 367, 797, 5383, 14177, 132187, 419443, 4770865, 18981007, 272701021, 1381813173, 25671154071, 163453499965
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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
.1.0.0.0.0.1.1.1
.1.0.0.0.1.1.0.0
.1.1.1.0.0.1.0.0
.0.1.0.0.0.0.0.0
.0.0.0.0.0.0.1.0
.0.0.1.0.0.1.1.1
.0.0.1.1.0.0.0.1
.1.1.1.0.0.0.0.1
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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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