A232340 Number of 6Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.

1, 288, 5338, 16338, 312276, 1047700, 20052758, 71916112, 1303776080, 4965633966, 85069249698, 342465661280, 5558842468148, 23543239967730, 363597929464136, 1613453348902866, 23803367852101370, 110263048814908764

Offset: 1

Author

R. H. Hardin, Nov 22 2013

Keywords

• nonn

Comments

Row 6 of A232335

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 80

Formula

Empirical recurrence of order 80 (see link above)