A217542 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..2 n X n array

3, 3, 81, 1401, 128051, 22263471, 12094757481, 16101863824781

Offset

1,1

Comments

Diagonal of A217547

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A213137 A260076 A024189 * A007451 A087542 A016456

Adjacent sequences: A217539 A217540 A217541 * A217543 A217544 A217545

Keyword

nonn

Author

R. H. Hardin Oct 06 2012

Status

approved