A208438 Number of n X n 0..2 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it

3, 28, 1548, 505000, 964650992, 10739447120572, 697471372604833664, 264039217624146229066192, 582845798190981709618659494484, 7500713445239384698086219757987132164

Offset

1,1

Comments

Diagonal of A208445

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

Some solutions for n=4
..0..2..0..1....2..0..2..1....2..1..0..2....2..1..2..1....2..0..2..1
..1..0..1..0....1..1..1..0....1..2..2..0....0..2..1..2....0..1..0..2
..2..2..1..2....0..1..2..2....2..1..2..2....1..2..2..0....2..0..1..2
..0..0..2..0....1..0..0..2....1..2..0..2....0..0..2..2....1..0..1..2

Crossrefs

Sequence in context: A328791 A140990 A196735 * A122891 A119156 A175979

Adjacent sequences: A208435 A208436 A208437 * A208439 A208440 A208441

Keyword

nonn

Author

R. H. Hardin Feb 26 2012

Status

approved