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A254513
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Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally
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1
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2703, 12324, 55667, 238740, 1038340, 4546393, 19754506, 85550331, 370307568, 1600037880, 6905546384, 29753763842, 128038285985, 550179273386, 2361021857130, 10118806677168, 43313794030418, 185189314116533
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