A208789 Number of n X n 0..2 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it

3, 30, 2284, 1228712, 4706484836, 128150274103008, 24802562025201552492, 34127874973788210853920816, 333813504191330813029874806441020, 23211817075051890165524104293613004854364

Offset

1,1

Comments

Diagonal of A208796

Links

R. H. Hardin, Table of n, a(n) for n = 1..12

Example

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

Crossrefs

Sequence in context: A238767 A323819 A308228 * A296173 A248728 A115040

Adjacent sequences: A208786 A208787 A208788 * A208790 A208791 A208792

Keyword

nonn

Author

R. H. Hardin Mar 01 2012

Status

approved