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A269150
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Number of nX6 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
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1
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1620, 330192, 46576336, 6004186984, 738478504448, 88082672552208, 10275566914040000, 1178661175005532168, 133416857282270562320, 14941436920498380518848, 1658672032118594665963168
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