A222764 Number of nX3 0..1 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

0, 4, 13, 96, 301, 2242, 7575, 55958, 196442, 1448568, 5188656, 38338122, 138866688, 1029494580, 3754449699, 27929878716, 102325331440, 763577070328, 2806916894109, 21001612120424, 77405327921654, 580452846750048

Offset: 1

Author

R. H. Hardin Mar 05 2013

Keywords

• nonn

Comments

Column 3 of A222769

Examples

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

Links

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