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A283546
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Number of 5Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors.
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1
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32, 291, 2615, 29558, 282773, 2905717, 29377334, 295789859, 2998091753, 30266794266, 306005234215, 3093187359365, 31261007663534, 315993726715575, 3193844095568199, 32282050634653328, 326293583523224661
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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) = 4*a(n-1) +42*a(n-2) +198*a(n-3) -64*a(n-4) +925*a(n-5) -1855*a(n-6) +7735*a(n-7) -27083*a(n-8) +45326*a(n-9) -73559*a(n-10) +51145*a(n-11) +19879*a(n-12) +10890*a(n-13) +32935*a(n-14) -24368*a(n-15) +328*a(n-16) +7803*a(n-17) -32113*a(n-18) -558*a(n-19) +29*a(n-20) +30*a(n-21)
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EXAMPLE
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Some solutions for n=4
..0..0..1..0. .0..0..0..0. .1..1..0..1. .1..1..0..1. .1..0..1..0
..1..0..0..0. .0..1..0..0. .0..0..0..1. .0..0..0..0. .0..0..0..0
..1..0..0..1. .0..0..0..1. .1..0..0..0. .0..1..0..0. .1..0..0..0
..0..0..0..0. .1..0..0..0. .0..0..0..0. .0..1..0..0. .1..0..1..0
..0..0..1..0. .0..1..0..0. .1..0..0..1. .0..0..1..0. .1..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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