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A208020
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Number of n X 5 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).
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2
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15, 1657, 5252041, 80318704605, 3662498214110836, 387950830575476495043, 81811898713607232898679186, 30915192640251267259536636853106, 19388812191991157504565482403825817325, 19036318336696557481934278608884237849314405
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