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A250981
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Number of (n+1)X(7+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements
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1
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17673153, 55847243498, 174911850250602, 548891857207523016, 1722239421934657361988, 5403961231550447362641701, 16956293118548007574241097692, 53204663067980474498805483728765
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