A233024 Number of nX6 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.

243, 12555, 959385, 75489671, 6050598339, 487651369463, 39386531523609, 3183658674622011, 257414773440925415, 20815582600558673815, 1683301058522200223439, 136126239210040751513149

Offset: 1

Author

R. H. Hardin, Dec 03 2013

Keywords

• nonn

Comments

Column 6 of A233026

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 50

Formula

Empirical recurrence of order 50 (see link above)