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A268207
Number of 3Xn 0..n arrays with every repeated value in every row and column greater than the previous repeated value.
0
6, 576, 178068, 157322070, 292870561470, 994136348047368, 5558748617057735268, 47663280965883681947286, 594023446572575009757975426, 10322377292292037627789408184574
OFFSET
1,1
COMMENTS
Row 3 of A268204.
EXAMPLE
Some solutions for n=3
..2..0..3....2..3..0....2..2..0....0..3..0....1..0..0....0..3..1....0..2..3
..0..0..2....1..0..2....3..0..1....3..3..0....2..0..2....3..2..3....0..1..3
..0..2..3....2..1..0....2..0..3....1..0..3....1..2..1....3..3..1....2..1..1
CROSSREFS
Cf. A268204.
Sequence in context: A332156 A291953 A225206 * A268247 A345024 A134367
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 28 2016
STATUS
approved