A232341 Number of 7Xn 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, 754, 22228, 76630, 2510674, 9298730, 318521414, 1241196022, 41049614014, 168217753216, 5314116600322, 22881089512316, 689018292976294, 3108875283706072, 89394192873266794, 421515136439868122

Offset: 1

Author

R. H. Hardin, Nov 22 2013

Keywords

• nonn

Comments

Row 7 of A232335

Examples

			Some solutions for n=4
..2..1..2..1....2..1..0..1....2..0..1..2....0..1..0..1....0..1..0..1
..0..1..2..1....2..1..2..0....1..2..1..0....2..1..2..1....2..1..2..1
..0..1..2..1....2..0..1..2....1..2..1..2....0..1..0..2....2..1..2..1
..0..1..0..2....1..2..0..2....1..2..0..1....0..1..0..1....0..1..2..1
..0..2..1..2....0..1..0..1....0..1..2..1....2..1..2..1....2..1..2..1
..1..2..1..2....2..1..2..1....0..1..0..2....2..1..2..1....2..1..2..1
..1..0..1..2....2..1..0..2....2..1..0..2....0..1..0..2....2..1..0..2
		

Links

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