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 A220038 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X n array 0
 4, 13, 184, 8337, 904715, 310371126 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A220044 LINKS Table of n, a(n) for n=1..6. EXAMPLE Some solutions for n=3 ..0..0..0....1..1..1....1..0..0....2..0..0....0..0..0....2..2..2....2..0..0 ..0..0..0....1..1..1....1..0..0....1..0..1....0..0..0....2..2..2....1..0..0 ..0..3..0....3..2..2....2..0..3....1..1..1....3..0..2....2..2..2....1..0..1 CROSSREFS Sequence in context: A198159 A322659 A042537 * A132512 A203221 A284700 Adjacent sequences: A220035 A220036 A220037 * A220039 A220040 A220041 KEYWORD nonn AUTHOR R. H. Hardin Dec 03 2012 STATUS approved

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Last modified May 27 03:56 EDT 2024. Contains 372847 sequences. (Running on oeis4.)