A186550 1/8192 the number of (n+2)X6 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

168200, 88662978, 31976088817, 13544245035035, 5541254050323697, 2292090739550640497, 945658119457845662613, 390484318597052432729179, 161199926899075628268006706, 66551276226155618695804703318

Offset: 1

Author

R. H. Hardin Feb 23 2011

Keywords

• nonn

Comments

Column 4 of A186553

Examples

			Some solutions for 4X6
..0..0..1..0..0..2....0..0..0..2..0..1....0..2..2..0..0..1....0..2..2..0..0..2
..0..0..0..2..0..1....0..0..0..0..0..3....0..0..0..0..1..3....0..0..0..2..0..3
..0..0..0..0..0..3....0..0..0..2..2..1....0..0..0..0..0..1....0..0..0..2..0..3
..0..0..0..0..3..1....0..0..0..0..0..1....0..0..0..0..0..2....0..0..0..0..1..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..20