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A146216
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Number of n X n binary arrays with all ones connected only in a 101-111-010 pattern in any orientation.
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0
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1, 1, 5, 17, 45, 317, 5736, 99087, 2137142, 81606063, 5341611544, 471313494449, 60737322268763, 12198817353925669
(list; graph; refs; listen; history; internal format)
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