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 A219571 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X n array 0
 4, 13, 415, 18564, 2399643, 1391739384 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A219578 LINKS Table of n, a(n) for n=1..6. EXAMPLE Some solutions for n=3 ..1..1..0....0..0..0....3..0..0....2..0..0....1..1..0....1..1..1....0..0..0 ..3..0..0....0..0..0....3..2..0....2..2..0....2..0..0....1..1..0....2..0..0 ..3..0..0....1..1..1....3..3..2....2..1..1....2..0..0....2..0..0....2..2..0 CROSSREFS Sequence in context: A219707 A219822 A048558 * A304545 A316372 A306130 Adjacent sequences: A219568 A219569 A219570 * A219572 A219573 A219574 KEYWORD nonn AUTHOR R. H. Hardin Nov 23 2012 STATUS approved

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Last modified August 15 10:04 EDT 2024. Contains 375173 sequences. (Running on oeis4.)