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A252497
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Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 5
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1
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12256, 201803, 3610840, 63629981, 1109122552, 19357895296, 338813107319, 5930208264965, 103722180394141, 1814207607697015, 31737667703021925, 555207990598647743, 9712275698429065985, 169898190771094065534
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=1
..3..1..0....0..1..3....0..2..2....1..0..0....0..1..3....0..1..2....0..2..0
..0..0..0....3..0..1....0..0..0....2..1..1....0..0..1....0..0..1....3..0..0
..0..1..0....0..1..0....1..0..0....0..1..1....0..0..0....1..3..0....0..1..0
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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