A219375 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 n X n array.

3, 7, 84, 2275, 143187, 23986853, 10160088596

Offset

1,1

Comments

Diagonal of A219381.

Links

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

Example

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

Crossrefs

Cf. A219381.

Sequence in context: A045974 A001531 A219588 * A326427 A064118 A041705

Adjacent sequences: A219372 A219373 A219374 * A219376 A219377 A219378

Keyword

nonn

Author

R. H. Hardin, Nov 19 2012

Status

approved