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 A199235 Number of nX6 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to at least one horizontal or vertical neighbor 0
 1, 143, 14159, 2350573, 410003607, 74737706829 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 6 of A199237 LINKS Table of n, a(n) for n=1..6. EXAMPLE Some solutions for n=4 ..0..0..1..0..2..2....0..0..1..1..0..0....0..0..1..1..1..2....0..0..0..1..1..1 ..0..1..1..0..2..1....0..2..2..2..0..1....0..2..2..0..0..2....0..2..1..2..0..0 ..0..1..1..2..2..1....0..2..1..1..0..1....0..2..2..2..2..1....0..2..1..2..2..0 ..0..0..2..2..2..1....1..1..2..2..2..2....0..0..1..1..1..1....1..1..1..2..2..2 CROSSREFS Sequence in context: A217534 A279115 A199039 * A029555 A265102 A046179 Adjacent sequences: A199232 A199233 A199234 * A199236 A199237 A199238 KEYWORD nonn AUTHOR R. H. Hardin Nov 04 2011 STATUS approved

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Last modified October 1 22:38 EDT 2023. Contains 365828 sequences. (Running on oeis4.)