A202737 Number of nX3 0..1 arrays with row sums equal and column sums unequal to adjacent columns.

2, 6, 38, 86, 282, 1074, 2802, 8694, 30170, 82286, 251682, 837026, 2336882, 7101030, 23060898, 65306934, 197740602, 632536014, 1808535522, 5464051326, 17297449410, 49797577110, 150233445162, 471996750978, 1365869873682, 4116478752054

Offset: 1

Author

R. H. Hardin Dec 23 2011

Keywords

• nonn

Comments

Column 3 of A202742

Examples

			Some solutions for n=5
..0..1..1....1..1..0....1..0..1....0..0..1....0..1..1....1..1..0....0..0..1
..0..1..1....0..1..1....0..1..1....0..0..1....1..1..0....1..1..0....0..0..1
..1..1..0....1..1..0....1..0..1....0..0..1....0..1..1....0..1..1....1..0..0
..0..1..1....1..1..0....1..0..1....0..1..0....1..1..0....0..1..1....0..0..1
..1..1..0....0..1..1....1..1..0....0..0..1....1..0..1....0..1..1....1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210