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A219497 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..1 n X n array 0
2, 3, 11, 35, 107, 325, 995, 3083, 9663, 30581, 97541 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A219502

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A296005 A159458 A057838 * A006497 A038912 A019361

Adjacent sequences:  A219494 A219495 A219496 * A219498 A219499 A219500

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 20 2012

STATUS

approved

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Last modified February 25 13:30 EST 2018. Contains 299654 sequences. (Running on oeis4.)