A205414 Number of (n+2)X9 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..2 introduced in row major order.

109757792, 8606465750, 735422130329, 36803297869771, 3148208484619590

Offset: 1

Author

R. H. Hardin Jan 26 2012

Keywords

• nonn

Comments

Column 7 of A205415

Examples

			Some solutions for n=3
..0..0..1..0..1..2..0..0..0....0..0..0..0..0..0..0..1..0
..2..0..1..0..1..1..0..1..1....0..0..1..1..2..1..2..1..0
..1..1..1..0..0..0..0..0..1....0..1..1..1..1..1..1..1..0
..2..2..1..0..1..1..0..0..1....1..1..1..0..0..0..0..0..0
..2..0..1..1..1..1..0..1..1....1..1..0..0..0..1..2..1..0