A203490 Number of nX7 0..2 arrays with row sums equal and column sums unequal to adjacent columns.

192, 134412, 59683122, 24148894412, 9532999874792

Offset: 1

Author

R. H. Hardin Jan 02 2012

Keywords

• nonn

Comments

Column 7 of A203491

Examples

			Some solutions for n=4
..0..1..0..0..2..1..0....0..2..1..2..0..0..0....0..1..1..1..2..2..0
..0..2..0..2..0..0..0....2..2..0..0..0..1..0....0..0..2..0..1..2..2
..2..2..0..0..0..0..0....1..1..2..1..0..0..0....1..2..2..2..0..0..0
..2..0..1..0..1..0..0....0..0..0..2..0..2..1....0..2..1..1..0..1..2