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A219620 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 columns, 0..2 n X n array 0
3, 11, 130, 5072, 556742, 172829660, 149566037863, 395003219927359 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A219627

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A113848 A287429 A274664 * A201611 A088075 A088076

Adjacent sequences:  A219617 A219618 A219619 * A219621 A219622 A219623

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 24 2012

STATUS

approved

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Last modified September 21 00:17 EDT 2019. Contains 327252 sequences. (Running on oeis4.)