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 A220573 Equals one maps: number of n X n binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 n X n array 0
 1, 8, 91, 17505, 3162375, 4239598056, 12835487766480 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A220579 LINKS Table of n, a(n) for n=1..7. EXAMPLE Some solutions for n=3 ..0..0..1....0..1..0....0..0..1....1..1..1....1..0..0....0..1..1....1..1..1 ..1..1..1....0..0..0....1..1..0....1..0..1....0..1..1....1..1..1....1..0..0 ..1..0..1....0..1..0....0..1..0....1..1..1....1..0..0....1..0..1....0..1..1 CROSSREFS Sequence in context: A234280 A298013 A302614 * A303743 A187157 A332597 Adjacent sequences: A220570 A220571 A220572 * A220574 A220575 A220576 KEYWORD nonn AUTHOR R. H. Hardin Dec 16 2012 STATUS approved

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Last modified July 19 13:57 EDT 2024. Contains 374394 sequences. (Running on oeis4.)