A219292 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 n X n array

3, 7, 77, 1540, 80488, 10000720, 2898775988, 2236908145276

Offset

1,1

Comments

Diagonal of A219299

Links

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

Example

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

Crossrefs

Sequence in context: A354480 A108537 A364660 * A181554 A116294 A077793

Adjacent sequences: A219289 A219290 A219291 * A219293 A219294 A219295

Keyword

nonn

Author

R. H. Hardin Nov 17 2012

Status

approved