A202633 Number of nX3 0..3 arrays with adjacent row and column sums unequal.

36, 2428, 143028, 8196796, 464590190, 26143599304, 1464347535012, 81766083532136, 4555446633690226, 253375514864780928, 14074813726276067778, 781057432128507731780, 43308319465255378496036, 2399781752411015808001612

Offset: 1

Author

R. H. Hardin Dec 21 2011

Keywords

• nonn

Comments

Column 3 of A202636

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..18