A268050 Number of 3Xn 0..n 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, 122, 9054, 1650058, 525124941, 262999737747, 190270786192101, 188077605422375047, 243772201296637313108, 401542086990450371906244

Offset

1,1

Comments

Row 3 of A268049.

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Cf. A268049.

Sequence in context: A169972 A360664 A080179 * A268006 A144993 A064681

Adjacent sequences: A268047 A268048 A268049 * A268051 A268052 A268053

Keyword

nonn

Author

R. H. Hardin, Jan 25 2016

Status

approved