A219858 Number of 7 X n 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..2 7 X n array.

36, 177, 4617, 116212, 2458431, 47321720, 902318235, 17136806921, 323010535780

Offset

1,1

Comments

Row 7 of A219852.

Links

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

Example

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

Crossrefs

Cf. A219852.

Sequence in context: A211742 A211751 A211762 * A307958 A348962 A127657

Adjacent sequences: A219855 A219856 A219857 * A219859 A219860 A219861

Keyword

nonn

Author

R. H. Hardin Nov 29 2012

Status

approved