A219945 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 7Xn array

120, 2670, 248881, 20434119, 1523159314, 105577880961

Offset

1,1

Comments

Row 7 of A219939

Links

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

Example

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

Crossrefs

Sequence in context: A000553 A126232 A105943 * A219834 A250651 A052721

Adjacent sequences: A219942 A219943 A219944 * A219946 A219947 A219948

Keyword

nonn

Author

R. H. Hardin Dec 01 2012

Status

approved