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A219920
Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 7Xn array
0
28, 57, 789, 7877, 76385, 715430, 6705546, 63193592
OFFSET
1,1
COMMENTS
Row 7 of A219915
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..0....0..0..0....1..1..1....1..1..1....1..1..1....1..1..1
..0..0..0....0..0..0....0..0..0....1..1..1....1..1..1....0..0..0....0..0..0
..0..0..0....0..0..0....1..0..0....1..1..1....1..0..0....0..0..0....0..0..0
..0..0..0....1..0..0....1..0..0....0..0..0....1..0..0....0..0..0....0..0..0
..1..1..1....2..1..1....1..1..2....0..0..0....1..0..0....0..0..0....1..0..0
..1..1..1....2..1..1....1..1..1....0..0..0....2..0..0....1..0..0....1..0..0
..1..1..2....2..1..1....1..1..1....1..0..0....2..2..2....1..0..0....1..0..0
CROSSREFS
Sequence in context: A042560 A042562 A042564 * A219216 A042566 A132769
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 01 2012
STATUS
approved