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

1,1

Comments

Column 4 of A268049.

Links

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

Example

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

Crossrefs

Cf. A268049.

Sequence in context: A283831 A268008 A222922 * A271516 A012603 A012737

Adjacent sequences: A268045 A268046 A268047 * A268049 A268050 A268051

Keyword

nonn

Author

R. H. Hardin, Jan 25 2016

Status

approved