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A230332
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Number of nX3 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero
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1
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0, 34, 534, 9162, 157200, 2696012, 46237080, 792976550, 13599731534, 233238537338, 4000094828472, 68602550986932, 1176549607672624, 20178097744610950, 346059040719985438, 5934992543883035738
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OFFSET
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1,2
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COMMENTS
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Column 3 of A230337
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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) = 15*a(n-1) +37*a(n-2) +6*a(n-3) -137*a(n-4) -75*a(n-5) +577*a(n-6) +1558*a(n-7) +1020*a(n-8) -8*a(n-9) for n>10
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EXAMPLE
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Some solutions for n=3
..0..1..0....0..1..0....0..1..0....0..1..0....0..1..1....0..2..2....0..0..2
..1..2..1....1..2..2....2..1..0....2..0..0....0..2..0....1..1..0....1..0..1
..2..0..0....1..0..1....0..1..2....0..1..2....2..1..2....0..2..2....2..2..1
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CROSSREFS
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Sequence in context: A228682 A020929 A160279 * A232320 A133720 A010950
Adjacent sequences: A230329 A230330 A230331 * A230333 A230334 A230335
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Oct 16 2013
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STATUS
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approved
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