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A206841
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Number of 3Xn 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal
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1
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62, 3844, 205518, 11091161, 598618182, 32326073197, 1745398353572, 94242149338308, 5088562764245208, 274755325893611168, 14835328260073233210, 801029018974028227334, 43251318116995342267638, 2335341775687363077659074
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