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A146618
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Number of n X n binary arrays with all ones connected only in a 1001-1111 pattern in any orientation.
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0
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1, 1, 1, 13, 73, 385, 4155, 53517, 1280671, 42489917, 1853052759, 122748998951, 11481223465221
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OFFSET
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1,4
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.1.1.0.0.1.0.0.1
.1.0.0.0.1.1.1.1
.1.0.0.0.0.0.0.0
.1.1.0.0.0.0.1.1
.0.0.1.1.1.1.0.1
.0.0.1.0.0.1.0.1
.1.0.0.1.0.0.1.1
.1.1.1.1.0.0.0.0
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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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