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 A232454 Number of nX3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, vertically, diagonally or antidiagonally 1
 7, 381, 8227, 187989, 4423815, 103104905, 2403848151, 56071521045, 1307753203691, 30500591819149, 711367314921007, 16591243576970945, 386958078996710159, 9025036009829701405, 210491208647017904707 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A232459 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 17*a(n-1) +110*a(n-2) +838*a(n-3) +888*a(n-4) -958*a(n-5) -4291*a(n-6) -2173*a(n-7) +1764*a(n-8) +2290*a(n-9) EXAMPLE Some solutions for n=4 ..1..0..1....0..2..0....1..1..0....0..1..0....1..1..1....0..1..1....1..0..0 ..0..2..1....1..0..1....2..0..2....0..0..2....2..2..0....2..1..2....2..0..1 ..2..1..1....2..2..1....1..2..1....2..1..0....0..2..1....1..2..1....2..0..2 ..2..2..1....2..2..0....1..1..1....2..1..0....2..1..1....0..0..1....1..1..1 CROSSREFS Sequence in context: A201114 A027510 A354026 * A140638 A299036 A112905 Adjacent sequences: A232451 A232452 A232453 * A232455 A232456 A232457 KEYWORD nonn AUTHOR R. H. Hardin, Nov 24 2013 STATUS approved

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Last modified November 30 12:19 EST 2023. Contains 367460 sequences. (Running on oeis4.)