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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
0
4, 130, 57412, 337083370, 26361689168962, 27444816617702590210, 380386826513820237531618354, 70188235698940395931354096660136964, 172416055686564260854366909730038107238333862
OFFSET
1,1
COMMENTS
Diagonal of A209019
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 * A376870 A003371 A113253
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 04 2012
STATUS
approved