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A183518
Number of n X n 0..2 arrays with each element equal to either the sum mod 3 of its horizontal and vertical neighbors or the sum mod 3 of its diagonal and antidiagonal neighbors
0
1, 9, 101, 3507, 371691, 89738569
OFFSET
1,2
COMMENTS
Diagonal of A183526
EXAMPLE
Some solutions for 3X3
..0..0..2....2..2..2....1..1..1....0..0..0....0..1..0....2..0..0....1..2..0
..0..2..0....0..1..0....1..1..0....0..1..0....2..1..2....2..0..1....1..1..1
..0..0..0....0..0..0....1..0..1....1..0..0....1..1..0....0..0..1....0..2..0
CROSSREFS
Sequence in context: A101563 A269732 A007133 * A374422 A339643 A083452
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 05 2011
STATUS
approved