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A186556
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Number of (n+1)X4 0..3 arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors
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4
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60074, 13360840, 2976803436, 663296784123, 147795682647630, 32931888185295104, 7337893459883784628, 1635031754050410331405, 364318292831600934919531, 81177517366244082982029095
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