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A219375 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 columns, 0..2 n X n array 0
3, 7, 84, 2275, 143187, 23986853, 10160088596 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A219381

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A045974 A001531 A219588 * A064118 A041705 A137130

Adjacent sequences:  A219372 A219373 A219374 * A219376 A219377 A219378

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 19 2012

STATUS

approved

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Last modified February 18 00:19 EST 2019. Contains 320237 sequences. (Running on oeis4.)