A203540 Number of nX6 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.

0, 196, 10404, 614656, 46485124, 3743237124, 257720706244, 20056281523776, 1492411644481536, 112070612773938064, 8426586286656023616, 632681292075367516804, 47524857928919914127524, 3570176077491731508417600

Offset: 1

Author

R. H. Hardin Jan 02 2012

Keywords

• nonn

Comments

Column 6 of A203542

Examples

			Some solutions for n=5
..2..1..0..2..0..0....2..0..0..0..1..1....2..0..0..0..0..0....0..0..0..1..1..0
..0..1..0..1..1..1....1..1..1..1..2..0....1..1..1..1..1..1....1..1..2..0..1..0
..0..2..2..0..1..2....0..1..2..0..0..0....0..2..0..2..1..1....0..2..2..0..1..1
..1..0..1..0..1..0....0..2..0..1..1..1....0..0..0..0..0..0....0..0..1..2..0..1
..1..0..1..1..1..0....1..1..0..0..0..1....1..1..1..1..1..0....1..1..1..0..0..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..73