A219584 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 7Xn array

84, 2447, 175054, 9838834, 712907937, 51875846851

Offset

1,1

Comments

Row 7 of A219578

Links

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

Example

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

Crossrefs

Sequence in context: A297486 A104674 A221010 * A140903 A219470 A219372

Adjacent sequences: A219581 A219582 A219583 * A219585 A219586 A219587

Keyword

nonn

Author

R. H. Hardin Nov 23 2012

Status

approved