A219366 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..3 n X n array

4, 13, 618, 82312, 39601472, 68107762118

Offset

1,1

Comments

Diagonal of A219373

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=3
..1..1..0....2..2..2....2..2..3....0..0..0....0..0..0....2..0..2....1..1..0
..1..0..0....2..2..3....2..0..3....0..0..2....0..0..0....0..0..0....1..0..0
..3..2..0....2..3..3....0..0..0....3..3..3....1..3..0....1..0..0....3..1..0

Crossrefs

Sequence in context: A316372 A306130 A317267 * A270638 A182439 A182441

Adjacent sequences: A219363 A219364 A219365 * A219367 A219368 A219369

Keyword

nonn

Author

R. H. Hardin Nov 19 2012

Status

approved