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 A267660 Number of n X n 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. 0
 1, 8, 108, 3143, 80404, 5663798, 264709135, 46354321490, 3947286385526, 1938755845909663 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A267667. LINKS EXAMPLE Some solutions for n=5 ..0..0..1..0..1....0..0..1..0..1....0..1..0..1..1....0..0..1..1..0 ..0..1..0..0..1....1..0..1..0..1....1..1..0..0..1....1..1..0..0..1 ..0..1..0..1..1....0..0..1..0..1....0..0..1..0..1....1..0..1..1..0 ..1..0..1..0..0....1..0..1..0..1....0..1..0..0..1....1..0..1..0..1 ..0..1..0..1..1....1..0..0..1..1....0..1..0..1..1....0..1..0..0..1 CROSSREFS Cf. A267667. Sequence in context: A099699 A084915 A138456 * A273057 A095917 A259233 Adjacent sequences:  A267657 A267658 A267659 * A267661 A267662 A267663 KEYWORD nonn AUTHOR R. H. Hardin, Jan 19 2016 STATUS approved

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Last modified January 19 06:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)