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A267949
Number of nX4 0..2 arrays with every repeated value in every row and column one larger mod 3 than the previous repeated value, and upper left element zero.
1
21, 1323, 52542, 1965330, 63015581, 1919539785, 54600088140, 1497422284157, 39564274878078, 1019357844042958, 25666134197134128, 635034954062340420, 15473668537066693635, 372414770834024213537, 8868326255432266486264
OFFSET
1,1
COMMENTS
Column 4 of A267952.
LINKS
EXAMPLE
Some solutions for n=3
..0..0..2..1....0..2..0..0....0..2..0..0....0..1..2..2....0..0..2..1
..2..2..0..2....2..2..1..2....0..2..1..0....2..1..1..2....1..0..1..0
..2..0..0..1....2..0..1..2....1..0..2..2....1..0..2..1....1..2..0..2
CROSSREFS
Cf. A267952.
Sequence in context: A036519 A219408 A250061 * A268096 A281432 A231782
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 22 2016
STATUS
approved