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A188960
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Number of nX3 array permutations with each element moved by a city block distance of no more than three
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1
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6, 720, 229080, 75764664, 17316382188, 3909049448304, 924052205725920, 222219070309228084, 53009406781203828708, 12600147078274878009900, 2996409860247302687479312, 713212717944705067662180768
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