A219691 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 7Xn array

28, 98, 1506, 18486, 220182, 2706117, 35011623, 461414270, 5979059010, 75005582670

Offset

1,1

Comments

Row 7 of A219686

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A233374 A231230 A233375 * A212777 A130281 A255218

Adjacent sequences: A219688 A219689 A219690 * A219692 A219693 A219694

Keyword

nonn

Author

R. H. Hardin Nov 25 2012

Status

approved