A220015 Number of 6Xn 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..3 6Xn array

56, 308, 9094, 204056, 4176405, 83856137, 1708594026, 34797091227, 689161340620

Offset

1,1

Comments

Row 6 of A220010

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A205228 A110554 A253922 * A005912 A264581 A220202

Adjacent sequences: A220012 A220013 A220014 * A220016 A220017 A220018

Keyword

nonn

Author

R. H. Hardin Dec 03 2012

Status

approved