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 A199360 Number of nX3 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors 0
 0, 0, 20, 23, 1655, 39597, 336788, 2130707, 97253704, 2328983293, 27777628803, 109663812046, 7330508486557, 181851333483598, 2032109646360324, 8979878533633165, 588003317861300327 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Column 3 of A199363 LINKS EXAMPLE Some solutions for n=4 ..0..0..1....0..0..1....0..0..0....0..0..0....0..0..0....0..1..1....0..0..0 ..0..1..1....2..0..1....1..2..2....1..2..2....1..1..1....0..0..1....1..2..2 ..2..2..2....2..3..1....1..3..2....1..2..3....2..2..3....2..2..3....1..1..2 ..3..3..3....2..3..3....1..3..3....1..3..3....2..3..3....2..3..3....3..3..3 CROSSREFS Sequence in context: A303303 A045563 A013339 * A199585 A093716 A117737 Adjacent sequences:  A199357 A199358 A199359 * A199361 A199362 A199363 KEYWORD nonn AUTHOR R. H. Hardin Nov 05 2011 STATUS approved

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Last modified November 29 08:27 EST 2020. Contains 338761 sequences. (Running on oeis4.)