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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
1
3, 30, 2284, 1228712, 4706484836, 128150274103008, 24802562025201552492, 34127874973788210853920816, 333813504191330813029874806441020, 23211817075051890165524104293613004854364
OFFSET
1,1
COMMENTS
Diagonal of A208796
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 01 2012
STATUS
approved