A219888 Number of 7Xn 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 7Xn array.
36, 247, 2701, 40239, 565824, 8017398, 113313853, 1558416287
Offset: 1
Keywords
Examples
Some solutions for n=3 ..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....0..0..0....0..0..0....1..1..1....1..0..0 ..1..1..1....1..1..1....1..0..0....1..1..1....0..0..0....1..1..1....1..0..1 ..1..1..1....1..1..2....0..0..0....0..0..0....0..1..0....1..0..1....2..1..1 ..1..1..2....1..0..1....0..0..0....0..0..0....1..1..1....1..0..0....2..1..1 ..1..1..1....1..0..0....0..1..0....0..0..0....1..1..1....2..0..1....2..1..1 ..1..1..1....1..0..1....2..1..2....1..0..0....2..1..2....2..1..1....2..1..1
Comments