A219166 - OEIS

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A219166

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 columns, 0..2 n X n array

3, 7, 146, 5853, 602498, 165134835, 144424701184

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OFFSET

1,1

COMMENTS

Diagonal of A219173

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A156521 A012636 A006031 * A374090 A119958 A275195

Adjacent sequences: A219163 A219164 A219165 * A219167 A219168 A219169

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 13 2012

STATUS

approved