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A234056
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Number of (2+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or antidiagonally downwards
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1
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402000, 23857470, 1425517650, 85374621482, 5109216554257, 305711881527997, 18290072795884688, 1094247314313409438, 65465147970699360649, 3916554430848201277811, 234313581827486451826841
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