A222574 Number of 2Xn 0..2 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

2, 1, 5, 10, 25, 128, 292, 1318, 3640, 14788, 42332, 172442, 496654, 2013238, 5919842, 23613110, 70986662, 279047430, 854262098, 3317468446, 10317918394, 39625082182, 125013898578, 475235749926, 1518534868610, 5720236047374

Offset: 1

Author

R. H. Hardin Feb 25 2013

Keywords

• nonn

Comments

Row 2 of A222573

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..65