A222575 Number of 3Xn 0..2 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

5, 5, 11, 56, 134, 1500, 3999, 46250, 126987, 1462034, 4136257, 46688904, 136406909, 1501835282, 4510551635, 48637741544, 149382874117, 1583951305266, 4954925376243, 51834151640684, 164570402519621, 1703435934148924

Offset: 1

Author

R. H. Hardin Feb 25 2013

Keywords

• nonn

Comments

Row 3 of A222573

Examples

			Some solutions for n=3
..0..0..0....0..0..1....0..1..2....0..0..0....0..0..0....0..1..1....0..0..0
..1..0..0....0..0..0....1..1..1....0..0..0....0..0..1....1..1..1....0..0..0
..0..0..0....0..0..0....1..1..1....0..0..1....0..0..0....1..1..1....1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..25