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A239529
Number of (n+1)X(n+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order
0
1, 2, 216, 11108, 7199001, 6976042240, 39351464058085, 559043719368109528
OFFSET
1,2
COMMENTS
Diagonal of A239537
EXAMPLE
Some solutions for n=4
..0..1..2..1..0....0..1..0..2..0....0..1..0..0..1....0..1..1..0..2
..0..1..2..1..0....0..1..0..2..0....0..1..0..0..1....0..1..1..0..2
..0..2..0..0..1....0..1..2..2..1....2..0..2..2..0....1..0..2..0..1
..1..2..0..0..1....0..2..2..0..1....2..0..2..2..0....1..0..2..2..1
..1..2..0..0..1....0..2..2..0..1....2..0..2..2..0....1..0..2..2..1
CROSSREFS
Sequence in context: A078280 A125058 A202741 * A101393 A124188 A261936
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 21 2014
STATUS
approved