A216030 Number of horizontal, vertical and diagonal neighbor colorings of the odd squares of an nX7 array with new integer colors introduced in row major order.

2, 136, 7050, 5219070, 1355988481, 4761748786964

Offset: 1

Author

R. H. Hardin Aug 30 2012

Keywords

• nonn

Comments

Column 7 of A216031

Examples

			Some solutions for n=4
..x..0..x..1..x..2..x....x..0..x..1..x..2..x....x..0..x..1..x..2..x
..0..x..1..x..3..x..4....0..x..1..x..3..x..4....0..x..1..x..0..x..3
..x..2..x..5..x..4..x....x..2..x..0..x..5..x....x..2..x..4..x..5..x
..2..x..3..x..0..x..3....2..x..3..x..6..x..0....6..x..5..x..7..x..1