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A219707 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X n array 0
4, 13, 297, 23506, 4745284, 3084196884, 7921920681423 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A219714

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=3

..1..0..0....0..0..0....0..0..0....1..0..0....0..0..0....1..0..0....0..0..0

..1..0..2....0..0..0....0..0..3....1..0..2....0..0..1....1..0..1....0..0..2

..2..2..3....2..0..1....3..0..0....2..1..1....3..1..2....3..1..1....3..1..1

CROSSREFS

Sequence in context: A203221 A284700 A050629 * A219822 A048558 A219571

Adjacent sequences:  A219704 A219705 A219706 * A219708 A219709 A219710

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 26 2012

STATUS

approved

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Last modified January 27 15:14 EST 2020. Contains 331295 sequences. (Running on oeis4.)