A220009 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..3 nX7 array

84, 263, 17525, 983187, 44269383, 1708594026

Offset

1,1

Comments

Column 7 of A220010

Links

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

Example

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

Crossrefs

Sequence in context: A096383 A220043 A137210 * A160321 A249969 A306516

Adjacent sequences: A220006 A220007 A220008 * A220010 A220011 A220012

Keyword

nonn

Author

R. H. Hardin Dec 03 2012

Status

approved