A268424 Number of 4Xn 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.

14, 2530, 467899, 92967597, 17282463434, 3197637400309, 577216284723410, 103129350712869051, 18199468798597838146, 3185845262388985273409, 553601961042772734126748, 95663189554686667773844253

Offset

1,1

Comments

Row 4 of A268423.

Links

R. H. Hardin, Table of n, a(n) for n = 1..41

Example

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

Crossrefs

Cf. A268423.

Sequence in context: A015515 A183580 A080690 * A079918 A199648 A271401

Adjacent sequences: A268421 A268422 A268423 * A268425 A268426 A268427

Keyword

nonn

Author

_R. H. Hardin_, Feb 04 2016

Status

approved