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 A267637 Number of n X n 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order. 0
 1, 8, 51, 1015, 8917, 343145, 3696933, 330654951, 4301737251, 1093232460925 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A267644. LINKS EXAMPLE Some solutions for n=5 ..0..1..0..1..0....0..1..0..1..0....0..1..0..1..0....0..1..1..0..1 ..1..0..1..0..0....0..1..1..0..0....1..0..0..1..1....1..0..1..0..1 ..1..0..0..1..1....1..0..1..0..1....0..1..1..0..0....0..1..0..1..0 ..0..1..0..0..1....0..1..0..1..1....0..1..0..0..1....1..0..1..1..0 ..1..0..1..0..0....1..0..1..1..0....1..0..1..1..0....1..1..0..0..1 CROSSREFS Cf. A267644. Sequence in context: A348312 A295602 A226199 * A238648 A341626 A215834 Adjacent sequences:  A267634 A267635 A267636 * A267638 A267639 A267640 KEYWORD nonn AUTHOR R. H. Hardin, Jan 18 2016 STATUS approved

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Last modified January 27 06:18 EST 2022. Contains 350601 sequences. (Running on oeis4.)