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A251778
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Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6
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1
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55766, 1317638, 9758786, 60326174, 1341002006, 10300749962, 63113882510, 1412118575318, 10829849843426, 66416445639470, 1485781706304062, 11396019453393170, 69887054317270646, 1563452949340108814
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