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 A230609 Number of n X n 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero 0
 0, 0, 0, 348, 186396, 570014364, 8937075346246, 767293632652220616, 357373665302275132957038, 905088655807411194007179276150, 12460983434177387538182482340975091242 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Diagonal of A230614 LINKS EXAMPLE Some solutions for n=4 ..0..1..2..0....0..1..2..1....0..1..0..2....0..1..2..1....0..1..2..0 ..0..1..1..2....2..0..0..2....2..0..1..0....2..0..1..2....0..2..1..0 ..1..2..0..1....1..2..1..1....2..0..2..1....0..1..0..2....1..0..2..2 ..1..0..2..1....2..0..2..1....0..1..0..2....2..0..1..0....0..1..0..2 CROSSREFS Sequence in context: A230616 A223178 A264326 * A177174 A139658 A181987 Adjacent sequences: A230606 A230607 A230608 * A230610 A230611 A230612 KEYWORD nonn AUTHOR R. H. Hardin, Oct 25 2013 STATUS approved

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Last modified December 1 15:47 EST 2022. Contains 358468 sequences. (Running on oeis4.)