A204629 Number of (n+1)X8 0..2 arrays with every 2X2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..2 introduced in row major order.

3145728, 9076721064, 26194503047262, 75595484720747496, 218163372078770313246, 629604521519860258105194, 1816995451072561641887723586, 5243724206237325303462055283538

Offset: 1

Author

R. H. Hardin Jan 17 2012

Keywords

• nonn

Comments

Column 7 of A204630

Examples

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

Links

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