A219888 Number of 7Xn 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 nonincreasing columns, 0..2 7Xn array

36, 247, 2701, 40239, 565824, 8017398, 113313853, 1558416287

Offset

1,1

Comments

Row 7 of A219883

Links

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

Example

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

Crossrefs

Sequence in context: A129149 A223558 A074363 * A233363 A030165 A282099

Adjacent sequences: A219885 A219886 A219887 * A219889 A219890 A219891

Keyword

nonn

Author

R. H. Hardin Nov 30 2012

Status

approved