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 A207544 Number of n X n 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal 0
 3, 81, 14974, 18584111, 151596413811, 8153351029428092, 2876868686935789680075, 6662940552094334528016043729, 101291421007307048419298014635301970 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A207550 LINKS EXAMPLE Some solutions for n=4 ..0..2..0..2....2..0..0..1....0..2..2..0....0..2..2..2....2..2..1..2 ..2..2..0..2....1..1..0..1....1..0..0..0....1..1..0..2....2..1..0..0 ..2..0..1..0....0..0..1..0....0..2..1..2....0..0..1..0....1..1..1..0 ..0..2..1..0....1..1..0..0....0..0..0..0....1..2..0..2....0..1..0..2 CROSSREFS Sequence in context: A207195 A207215 A355071 * A207311 A206693 A223570 Adjacent sequences: A207541 A207542 A207543 * A207545 A207546 A207547 KEYWORD nonn AUTHOR R. H. Hardin Feb 18 2012 STATUS approved

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Last modified March 24 11:01 EDT 2023. Contains 361479 sequences. (Running on oeis4.)