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A231834
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Number of nX3 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors
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1
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16, 188, 4508, 111621, 2836554, 71178861, 1792092360, 45099279326, 1134900171250, 28560684486812, 718739864735561, 18087411635523189, 455177754069590473, 11454748470680974894, 288263810554257272575
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OFFSET
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1,1
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COMMENTS
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Column 3 of A231839
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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FORMULA
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Empirical: a(n) = 16*a(n-1) +206*a(n-2) +762*a(n-3) -3181*a(n-4) -9838*a(n-5) +4473*a(n-6) +18193*a(n-7) +2848*a(n-8) -6404*a(n-9) -1848*a(n-10) for n>11
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EXAMPLE
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Some solutions for n=4
..1..0..0....3..0..0....2..1..1....0..0..0....2..2..3....3..2..1....3..1..0
..0..0..2....0..0..3....1..3..2....2..1..2....2..3..0....1..1..0....1..0..0
..0..1..2....2..2..2....3..1..1....0..0..1....1..0..0....0..0..1....0..0..3
..1..3..3....3..3..3....1..1..2....0..2..2....1..1..3....0..1..2....0..0..0
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CROSSREFS
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Sequence in context: A016244 A240361 A016292 * A181277 A181269 A004333
Adjacent sequences: A231831 A231832 A231833 * A231835 A231836 A231837
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Nov 14 2013
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STATUS
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approved
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