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A209472
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Number of nX4 0..2 arrays with every element value z a city block distance of exactly z from another element value z
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1
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10, 635, 46470, 2497939, 128482557, 6446131005, 325528559843, 16644234605381, 852914715264837, 43670664954372485, 2233712112728209837, 114208859183577359217, 5839967102661447809375, 298652899566008996574607
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