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 A207202 Number of n X n 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal 0
 3, 81, 11047, 7766709, 29420037104, 619075354969204, 72904426459924759331 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A207208 LINKS EXAMPLE Some solutions for n=5 ..2..1..0..2..2....1..2..0..0..2....0..0..2..1..0....1..2..2..1..2 ..0..0..2..1..0....0..2..0..1..2....0..1..0..2..2....2..1..0..0..2 ..2..2..0..2..0....0..2..0..0..2....2..0..1..2..0....1..1..0..2..1 ..2..2..2..0..2....2..1..2..0..0....2..1..2..1..0....2..0..2..0..2 ..2..0..2..2..0....1..2..2..2..2....1..1..0..2..0....2..1..1..1..0 CROSSREFS Sequence in context: A207007 A223783 A223969 * A206856 A206951 A206726 Adjacent sequences: A207199 A207200 A207201 * A207203 A207204 A207205 KEYWORD nonn AUTHOR R. H. Hardin Feb 15 2012 STATUS approved

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Last modified February 8 11:37 EST 2023. Contains 360138 sequences. (Running on oeis4.)