A197106 Half the number of nX5 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.

212, 181032, 127561432, 89735942231, 63216096026066, 44545247280268585, 31390101087203449414, 22119869262708036718308, 15587336304367972010506477, 10984020530189934999886659182, 7740175041472778186520710031686

Offset

1,1

Comments

Column 5 of A197109

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

Some solutions for 4X4
..1..0..3..1..3....1..0..3..3..1....1..0..2..3..2....1..0..0..3..1
..0..0..1..2..1....0..0..1..2..3....0..0..1..1..0....0..0..1..1..3
..0..0..2..3..0....0..0..2..3..3....0..0..2..1..1....0..0..2..1..0
..1..0..0..0..2....1..0..0..2..1....1..0..0..2..1....1..0..0..3..1

Crossrefs

Sequence in context: A239045 A262657 A079794 * A138568 A201104 A092126

Adjacent sequences: A197103 A197104 A197105 * A197107 A197108 A197109

Keyword

nonn

Author

R. H. Hardin, Oct 10 2011

Status

approved