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A146272
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Number of n X n binary arrays with all ones connected only in a 110-111-111 pattern in any orientation.
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0
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1, 1, 5, 17, 39, 173, 3199, 51175, 661225, 13583567, 722876085, 45766294357, 3140059939559, 313372103740953, 57398488477811657, 14396095473760523773
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OFFSET
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1,3
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LINKS
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EXAMPLE
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Maximal 8 X 8 example
.0.0.0.0.0.1.1.1
.1.1.1.0.0.1.1.1
.1.1.1.0.0.0.1.1
.1.1.0.1.1.1.0.0
.0.0.0.1.1.1.0.0
.1.1.0.1.1.0.1.1
.1.1.1.0.0.1.1.1
.1.1.1.0.0.1.1.1
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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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