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A219588 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..2 n X n array 0
3, 7, 84, 1114, 26006, 1767430, 415752625 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A219595

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A175236 A045974 A001531 * A219375 A064118 A041705

Adjacent sequences:  A219585 A219586 A219587 * A219589 A219590 A219591

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 23 2012

STATUS

approved

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Last modified February 19 20:17 EST 2019. Contains 320328 sequences. (Running on oeis4.)