A219822 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..3 n X n array

4, 13, 394, 29403, 7468429, 6596370468

Offset

1,1

Comments

Diagonal of A219828

Links

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

Example

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

Crossrefs

Sequence in context: A348140 A344513 A219707 * A048558 A219571 A304545

Adjacent sequences: A219819 A219820 A219821 * A219823 A219824 A219825

Keyword

nonn

Author

R. H. Hardin Nov 28 2012

Status

approved