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A221486
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Number of 4Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction
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1
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0, 64, 313, 34751, 802711, 37622097, 1219698562, 47497298437, 1684060316110, 62602762212310, 2271866000217269, 83456368590958988, 3046870056535199883, 111585285541376641494, 4080105459850623520340, 149308509670479309110705
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