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A253364
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Number of (n+2)X(5+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal maximum minus antidiagonal minimum unequal to its neighbors horizontally and vertically
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1
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1904, 3136, 13800, 23936, 76840, 175328, 438504, 1151296, 2656232, 7032608, 17090280, 42368896, 111988680, 261552224, 723071304, 1661410368, 4573702312, 10671650720, 28629961640, 68211963648, 179436757256, 431899660512
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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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FORMULA
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Empirical: a(n) = 12*a(n-2) -58*a(n-4) +152*a(n-6) -105*a(n-8) +248*a(n-10) -500*a(n-12) +236*a(n-14) -128*a(n-16) for n>19
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EXAMPLE
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Some solutions for n=4
..0..0..0..1..1..1..1....0..1..1..0..1..0..1....0..0..1..1..0..1..0
..0..0..1..0..1..0..1....0..1..0..1..1..1..1....0..0..1..0..1..0..1
..1..1..1..1..1..1..1....1..0..1..0..1..0..1....1..1..1..1..1..1..1
..1..0..1..0..1..0..1....1..1..1..1..1..1..0....1..0..1..0..1..0..1
..1..1..0..1..0..1..0....1..0..1..0..1..0..1....1..1..1..1..1..1..0
..1..1..1..1..1..1..0....1..1..1..1..0..0..0....1..0..1..0..1..0..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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