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A184222
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Half the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock diagonal sum differing from its antidiagonal sum by more than 3
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0
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15, 411, 20958, 4207437, 2100723171, 3390680573862, 15315046904131217, 208931377551712553029, 8272310043853147026573208, 970110871920573518964680291007, 333510642857168957639513329116920351
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