A202741 Number of n X 7 0..1 arrays with row sums equal and column sums unequal to adjacent columns.

2, 214, 14258, 613950, 24620522, 967878370, 37121438930, 1401569558590, 52383342552410, 1938999772255314, 71224141762895090

Offset: 1

Author

R. H. Hardin, Dec 23 2011

Keywords

• nonn

Comments

Column 7 of A202742.

Examples

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

Crossrefs

Cf. A202742.