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A254805
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Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally
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1
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2700, 10484, 40167, 121701, 426308, 1351487, 4771368, 16058526, 56235160, 192884364, 669557257, 2305588750, 7958763182, 27396735121, 94312947300, 324414828833, 1115586299491, 3835775446691, 13186270802164, 45332896612376
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