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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.
1
14, 2530, 467899, 92967597, 17282463434, 3197637400309, 577216284723410, 103129350712869051, 18199468798597838146, 3185845262388985273409, 553601961042772734126748, 95663189554686667773844253
OFFSET
1,1
COMMENTS
Row 4 of A268423.
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 04 2016
STATUS
approved