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A240786
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Number of 5Xn 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order
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1
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16, 111, 459, 2167, 10150, 47920, 226532, 1071982, 5074441, 24028807, 113785341, 538857251, 2551907524, 12085420318, 57234822524, 271056496272, 1283688860005, 6079388685605, 28791225250367, 136351659911471, 645744522623364
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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) = 10*a(n-1) -35*a(n-2) +50*a(n-3) +23*a(n-4) -204*a(n-5) +114*a(n-6) +684*a(n-7) -1284*a(n-8) -309*a(n-9) +4412*a(n-10) -5481*a(n-11) -90*a(n-12) +4826*a(n-13) -3964*a(n-14) -3408*a(n-15) +3143*a(n-16) +3475*a(n-17) -3191*a(n-18) +7943*a(n-19) +2119*a(n-20) +1380*a(n-21) -8241*a(n-22) -8523*a(n-23) +3733*a(n-24) -79*a(n-25) +1925*a(n-26) +1275*a(n-27) +131*a(n-28) -147*a(n-29) -286*a(n-30) for n>34
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EXAMPLE
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Some solutions for n=4
..0..1..0..1....0..1..0..1....0..1..1..0....0..0..1..0....0..1..1..0
..1..0..0..1....1..1..0..0....1..1..1..0....0..0..1..1....0..1..1..1
..0..0..1..1....1..0..1..0....1..1..1..0....0..0..1..1....1..0..1..1
..0..0..1..1....0..1..0..1....1..1..1..0....1..0..1..0....1..0..0..1
..0..1..0..1....1..0..1..0....0..1..1..0....1..0..1..0....1..0..0..1
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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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