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A204362
Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly three ways, and new values 0..2 introduced in row major order
0
74, 466, 342, 704, 1984, 4856, 12896, 35872, 95456, 259520, 711424, 1933568
OFFSET
1,1
COMMENTS
Diagonal of A204370
EXAMPLE
Some solutions for n=5
..0..0..1..1..1..2..1....0..1..1..1..2..2..2....0..0..0..0..0..0..0
..0..0..0..1..1..1..2....0..0..1..1..1..2..2....1..1..1..1..1..1..1
..1..0..0..0..1..1..1....0..0..0..1..1..1..2....1..1..1..1..1..1..1
..1..1..0..0..0..1..1....1..0..0..0..1..1..1....2..2..2..2..2..2..2
..1..1..1..0..0..0..1....1..1..0..0..0..1..1....0..0..0..0..0..0..0
..0..1..1..1..0..0..0....1..1..1..0..0..0..1....0..0..0..0..0..0..0
..1..0..1..1..1..0..0....2..1..1..1..0..0..0....0..2..2..2..2..2..2
CROSSREFS
Sequence in context: A205754 A238022 A296025 * A321114 A205584 A280402
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 14 2012
STATUS
approved