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A208783
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Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors)
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1
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5, 114, 9089, 1515903, 435411946, 193010377345, 122941305336223, 106980807941644808, 122461210700419700713, 179068063215679396855393, 326696607497802174915500964, 729453937748303441283299140497
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