A219767 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 n X n array

2, 4, 14, 100, 1229, 27921, 1163030, 98763027, 18231769222, 7304376778802

Offset

1,1

Comments

Diagonal of A219773

Links

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

Example

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

Crossrefs

Sequence in context: A339651 A032052 A005737 * A000609 A245079 A167008

Adjacent sequences: A219764 A219765 A219766 * A219768 A219769 A219770

Keyword

nonn

Author

R. H. Hardin Nov 27 2012

Status

approved