A219882 Number of nX7 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 nX7 array

28, 41, 1158, 21035, 371384, 6337533, 113313853, 2047979807, 36229677541, 611056441694

Offset

1,1

Comments

Column 7 of A219883

Links

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

Example

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

Crossrefs

Sequence in context: A361855 A047630 A135789 * A154035 A025368 A025359

Adjacent sequences: A219879 A219880 A219881 * A219883 A219884 A219885

Keyword

nonn

Author

R. H. Hardin Nov 30 2012

Status

approved