A222770 Number of 2Xn 0..1 arrays with exactly floor(2Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

0, 3, 4, 11, 18, 73, 152, 470, 1022, 3361, 7840, 23386, 57626, 172387, 434280, 1257025, 3275034, 9399647, 24776572, 70325187, 188540168, 531573662, 1436226680, 4032772569, 10987025446, 30742228871, 84180549328, 235159618106

Offset: 1

Author

R. H. Hardin Mar 05 2013

Keywords

• nonn

Comments

Row 2 of A222769

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..107