A222765 Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

3, 11, 66, 465, 3431, 25772, 196185, 1508369, 11685222, 91068653, 713197411, 5607868082, 44244333098, 350085423285, 2776997948510, 22076166728109, 175834747565068, 1402892278684566, 11209941707509701, 89696333927946099

Offset: 1

Author

R. H. Hardin Mar 05 2013

Keywords

• nonn

Comments

Column 4 of A222769

Examples

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

Links

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