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A252900
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Number of (n+2)X(2+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order
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1
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2793, 30453, 306680, 3255537, 33858062, 357165303, 3740990254, 39381278095, 413451112737, 4347775265112, 45683304899259, 480233990713908, 5047003232714437, 53050317963040942, 557570119871186926
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