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A218066
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Number of 3Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..1 3Xn array
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1
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8, 16, 74, 260, 1046, 3974, 15578, 60242, 234468, 910060, 3536762, 13737348, 53371468, 207332364, 805465810, 3129084596, 12156035112, 47224200410, 183458638422, 712707497212, 2768755861210, 10756176540402, 41786039888224
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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) = 2*a(n-1) +11*a(n-2) -7*a(n-3) -34*a(n-4) +11*a(n-5) +49*a(n-6) -14*a(n-7) -36*a(n-8) +7*a(n-9) +a(n-10) +8*a(n-11) +2*a(n-12) -13*a(n-13) +2*a(n-14) +4*a(n-15) for n>18
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EXAMPLE
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Some solutions for n=3
..1..1..1....0..0..0....0..0..1....0..0..1....1..0..0....0..0..1....0..0..1
..1..0..0....0..0..0....0..0..0....0..0..0....0..0..0....1..1..1....1..0..0
..1..0..0....1..0..1....0..0..1....1..0..0....1..0..1....1..0..0....0..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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