A219857 Number of 6Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 6Xn array

28, 108, 1815, 28116, 356688, 4032388, 43528933, 457223032, 4709163589, 47522708493, 466658768529, 4439697526894

Offset

1,1

Comments

Row 6 of A219852

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Sequence in context: A010016 A256647 A223492 * A068196 A044279 A044660

Adjacent sequences: A219854 A219855 A219856 * A219858 A219859 A219860

Keyword

nonn

Author

R. H. Hardin Nov 29 2012

Status

approved