A219887 Number of 6Xn 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 6Xn array

28, 151, 1069, 10350, 89795, 764027, 6337533, 51044999, 398508546, 2994521086

Offset

1,1

Comments

Row 6 of A219883

Links

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

Example

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

Crossrefs

Sequence in context: A187608 A069917 A028380 * A271636 A188778 A002593

Adjacent sequences: A219884 A219885 A219886 * A219888 A219889 A219890

Keyword

nonn

Author

R. H. Hardin Nov 30 2012

Status

approved