A219685 Number of nX7 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..2 nX7 array

28, 44, 922, 15763, 219216, 2709320, 35011623, 479633094, 6609458081, 87609413453, 1101888673326, 13242315279610, 153674552267213, 1731915355340898, 18978190461636053, 202216531650350001

Offset

1,1

Comments

Column 7 of A219686

Links

Table of n, a(n) for n=1..16.

Example

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

Crossrefs

Sequence in context: A260954 A349495 A169962 * A180045 A144581 A075875

Adjacent sequences: A219682 A219683 A219684 * A219686 A219687 A219688

Keyword

nonn

Author

R. H. Hardin Nov 25 2012

Status

approved