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A251382
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Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6
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0
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71, 12457, 16036923, 152031391763, 10607219852841053, 5446724008815493105583, 20584044969991357548445765971, 572515877737272494782187942247163209, 117194100380880848780139821932249983127330495
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