A219720 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 7Xn array

120, 1822, 207161, 21036433, 1658836014, 118470103282, 7921920681423

Offset

1,1

Comments

Row 7 of A219714

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A353404 A353200 A110839 * A346574 A244838 A266343

Adjacent sequences: A219717 A219718 A219719 * A219721 A219722 A219723

Keyword

nonn

Author

R. H. Hardin Nov 26 2012

Status

approved