A232160 Number of nX7 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal.

48, 9004, 124436, 1767266, 26694774, 415332300, 6564512068, 103384156384, 1636124088162, 25973583237174, 411171410014356, 6519608941018384, 103473233282931542, 1639791299611784558, 26009017324816484476

Offset: 1

Author

R. H. Hardin, Nov 19 2013

Keywords

• nonn

Comments

Column 7 of A232161

Examples

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

Links

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