A222506 Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

4, 10, 35, 423, 2066, 23678, 128889, 1529195, 8569032, 102004630, 577797690, 6918500106, 39468519264, 474774414486, 2721664132317, 32865146885501, 189103727308651, 2290577790555642, 13219410500639451, 160529083824632284

Offset: 1

Author

R. H. Hardin Feb 23 2013

Keywords

• nonn

Comments

Column 5 of A222509

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..105