A219210 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 n X n array

3, 3, 37, 493, 19307, 1401275, 225464479, 85975478510

Offset

1,1

Comments

Diagonal of A219217

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A303820 A206477 A372022 * A218863 A082394 A308645

Adjacent sequences: A219207 A219208 A219209 * A219211 A219212 A219213

Keyword

nonn

Author

R. H. Hardin Nov 14 2012

Status

approved