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A231259
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Number of (n+1)X(4+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order
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1
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7, 83, 1253, 19503, 302121, 4670875, 72212345, 1116538567, 17264116873, 266940042371, 4127456101305, 63819175744751, 986779131942921, 15257688013347083, 235916058283574201, 3647760162012484183
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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) = 31*a(n-1) -364*a(n-2) +2570*a(n-3) -12609*a(n-4) +44731*a(n-5) -117554*a(n-6) +227260*a(n-7) -319008*a(n-8) +314816*a(n-9) -208992*a(n-10) +83456*a(n-11) -14336*a(n-12)
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EXAMPLE
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Some solutions for n=3
..0..0..0..1..1....0..0..0..0..0....0..0..1..1..1....0..0..1..1..1
..0..0..1..2..2....0..0..0..1..1....0..1..0..0..0....0..1..0..0..2
..1..1..2..1..1....1..1..1..2..2....1..0..2..2..2....1..0..0..2..0
..2..2..1..1..1....2..2..2..2..2....0..2..2..2..2....2..2..2..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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