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A252949
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Number of (n+2)X(5+2) 0..2 arrays with every consecutive three elements in every row, column and nw-se diagonal having exactly two distinct values, and new values 0 upwards introduced in row major order
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1
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48024, 262494, 1784781, 13646115, 110574774, 919418760, 7763464440, 66003601788, 563165929260, 4814005980501, 41185929329001, 352531934350965, 3018217684914378, 25843545938825991, 221299439996922372
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