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A146054
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Number of n X n binary arrays with all ones connected only in a 2X3 U in any orientation.
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0
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1, 1, 9, 29, 153, 2069, 42313, 973281, 38746505, 2736250609, 283141781389, 43072398238613, 10634195356126331, 4171127160636409481, 2497710164925793120737
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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
.1.1.1.0.1.1.0.0
.1.0.1.0.1.0.1.1
.0.0.0.0.1.1.0.1
.1.0.1.0.0.0.1.1
.1.1.1.0.1.1.0.0
.0.0.0.0.1.0.1.1
.1.0.1.0.1.1.0.1
.1.1.1.0.0.0.1.1
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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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