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A207197
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Number of nX4 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column
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1
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69, 4761, 247002, 12539372, 632716336, 31901664357, 1610194874799, 81287871720373, 4104318500772121, 207237297025296600, 10464020397550910416, 528359580441380112910, 26678441328805428234587, 1347073335296997275306445
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