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 A199125 Number of n X n 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 no element equal to any horizontal or vertical neighbor 0
 1, 2, 6, 258, 11475, 438502, 358599045, 247746055048, 141388449764548 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A199133 LINKS EXAMPLE Some solutions for n=5 ..0..1..0..1..0....0..1..2..1..2....0..1..2..1..2....0..1..0..2..1 ..2..0..1..0..2....2..0..1..0..1....1..2..1..2..0....1..0..2..0..2 ..1..2..0..2..1....0..2..0..1..2....2..0..2..0..1....0..2..1..2..1 ..0..1..2..1..2....1..0..2..0..1....0..2..1..2..0....1..0..2..1..0 ..1..2..0..2..1....2..1..0..2..0....1..0..2..0..1....0..2..1..0..2 CROSSREFS Sequence in context: A181772 A183398 A052342 * A232696 A007190 A164829 Adjacent sequences:  A199122 A199123 A199124 * A199126 A199127 A199128 KEYWORD nonn AUTHOR R. H. Hardin Nov 03 2011 STATUS approved

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Last modified April 5 00:43 EDT 2020. Contains 333238 sequences. (Running on oeis4.)