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A264956
Number of 4 X n arrays containing n copies of 0..4-1 with no equal horizontal or vertical neighbors.
1
24, 504, 10728, 269352, 7340712, 212706840, 6427851432, 200437195992, 6401503898904, 208353728741064, 6885992401320264, 230473529137180056, 7796234052703001880, 266117752529540837544, 9154725401806039272072
OFFSET
1,1
COMMENTS
Row 4 of A264954.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..2....3..2..3....2..1..2....1..3..1....2..1..3....2..3..0....0..2..3
..3..2..1....2..0..1....3..2..0....0..1..0....3..0..1....3..2..1....1..0..1
..1..3..0....1..3..2....0..3..1....3..2..3....2..3..0....0..1..3....3..2..0
..2..0..3....0..1..0....3..1..0....2..0..2....1..0..2....2..0..1....2..1..3
CROSSREFS
Cf. A264954.
Sequence in context: A166757 A289833 A242524 * A055007 A014907 A233636
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 29 2015
STATUS
approved