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A305476
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Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 6 or 8 king-move adjacent elements, with upper left element zero.
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0
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1, 5, 10, 48, 277, 1558, 11438, 123104, 1894686, 36262397, 960587975, 37710956242, 1964623266399, 139733367823273
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