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A299303
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Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
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1
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2, 52, 223, 1024, 5360, 28374, 144040, 743640, 3857242, 19925599, 102977350, 532709362, 2754912665, 14246433006, 73680910336, 381067786735, 1970816457786, 10192855468940, 52716573704127, 272645676769182, 1410103205704342
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