A202740 Number of nX6 0..1 arrays with row sums equal and column sums unequal to adjacent columns.

2, 102, 3032, 62398, 1375912, 27842760, 578826040, 11600238174, 239443637912, 4806953288872, 98795215188760, 1991699775933928, 40848655904440568, 824853028164662088, 16889107635602264212, 341245428784872621534

Offset: 1

Author

R. H. Hardin Dec 23 2011

Keywords

• nonn

Comments

Column 6 of A202742

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..19