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A204746
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Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order
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0
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40, 46, 22, 32, 48, 74, 116, 184, 294, 472, 760, 1226, 1980, 3200, 5174, 8368, 13536, 21898, 35428, 57320, 92742, 150056, 242792, 392842
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