A268048 Number of nX4 0..4 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.

12, 3183, 1650058, 829256141, 386602239495, 168939588471080, 70137880138850634, 27947317545815128289, 10768364145370007188272, 4034957610865168347501829, 1476750375062134346976725823

Offset: 1

Author

R. H. Hardin, Jan 25 2016

Keywords

• nonn

Comments

Column 4 of A268049.

Examples

			Some solutions for n=5
..0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0
..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0
..2..0..0..3....2..0..0..2....1..0..0..2....2..0..0..3....2..0..0..2
..4..3..0..0....3..1..0..1....3..0..0..1....4..2..0..2....3..4..0..3
..2..3..0..4....1..0..4..0....4..2..2..4....3..3..0..3....4..2..0..4
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..17

Crossrefs

Cf. A268049.