A209012 Number of n X n 0..3 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it

4, 130, 57412, 337083370, 26361689168962, 27444816617702590210, 380386826513820237531618354, 70188235698940395931354096660136964, 172416055686564260854366909730038107238333862

Offset

1,1

Comments

Diagonal of A209019

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=4
..2..3..1..0....1..2..1..3....2..3..1..3....1..3..2..1....0..1..2..3
..3..2..3..0....3..3..3..0....3..2..1..1....2..1..0..3....1..3..3..0
..2..3..3..0....0..3..1..1....0..2..0..1....3..3..3..0....2..0..1..2
..1..3..0..2....3..1..0..0....1..3..3..1....0..3..1..3....1..2..0..0

Crossrefs

Sequence in context: A299367 A299931 A006103 * A003371 A113253 A201977

Adjacent sequences: A209009 A209010 A209011 * A209013 A209014 A209015

Keyword

nonn

Author

R. H. Hardin Mar 04 2012

Status

approved