A268047 Number of nX3 0..3 arrays with every repeated value in every row unequal to, and in every column equal to, the previous repeated value, and new values introduced in row-major sequential order.

4, 159, 9054, 467899, 22309009, 999810316, 42764566838, 1764109373799, 70707661248442, 2768685594929370, 106349114580207849, 4020025709583200998, 149916029504065737481, 5526692782368686983855, 201739654709622213459404

Offset: 1

Author

R. H. Hardin, Jan 25 2016

Keywords

• nonn

Comments

Column 3 of A268049.

Examples

			Some solutions for n=5
..0..0..1....0..0..1....0..0..1....0..0..1....0..0..1....0..0..1....0..0..1
..0..0..2....0..0..2....0..0..2....0..0..2....0..0..2....0..0..2....0..0..2
..0..1..1....2..1..2....0..2..0....0..0..2....1..2..0....0..1..1....2..1..2
..1..0..0....0..2..1....0..3..1....0..2..3....0..3..0....0..3..3....1..3..1
..0..1..1....3..1..0....0..1..0....2..0..0....0..0..3....1..2..2....2..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 78

Crossrefs

Cf. A268049.

Formula

Empirical recurrence of order 78 (see link above)