A268425 Number of 5Xn 0..3 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.

44, 34195, 22309009, 15615613747, 10053286458091, 6434348326690233, 3993182343091351469, 2446591845328690229717

Offset

1,1

Comments

Row 5 of A268423.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A268423.

Sequence in context: A007105 A180842 A172753 * A183749 A119096 A131484

Adjacent sequences: A268422 A268423 A268424 * A268426 A268427 A268428

Keyword

nonn

Author

R. H. Hardin, Feb 04 2016

Status

approved