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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.
0
4, 122, 9054, 1650058, 525124941, 262999737747, 190270786192101, 188077605422375047, 243772201296637313108, 401542086990450371906244
OFFSET
1,1
COMMENTS
Row 3 of A268049.
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: A360664 A364948 A080179 * A268006 A144993 A064681
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 25 2016
STATUS
approved