A219285 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..1 n X n array

2, 3, 19, 149, 1751, 35654, 1455308, 127423164, 23439798583

Offset

1,1

Comments

Diagonal of A219291

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A201378 A241350 A032329 * A066227 A061490 A048827

Adjacent sequences: A219282 A219283 A219284 * A219286 A219287 A219288

Keyword

nonn

Author

R. H. Hardin Nov 17 2012

Status

approved