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A203037
Number of 7Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns
0
4, 20228, 77256180, 539443637988, 4274880689220682
OFFSET
1,1
COMMENTS
Row 7 of A203031
EXAMPLE
Some.solutions.for.n=4
..0..1..3..0....1..0..0..1....2..2..1..1....0..0..0..3....2..0..3..0
..1..2..0..1....0..2..0..0....2..0..1..3....0..1..1..1....0..2..1..2
..1..3..0..0....1..1..0..0....2..3..0..1....0..2..0..1....0..2..1..2
..0..2..0..2....2..0..0..0....1..2..2..1....2..0..1..0....1..0..2..2
..0..3..0..1....0..0..2..0....2..2..1..1....1..0..0..2....1..0..3..1
..1..3..0..0....1..0..0..1....0..2..1..3....1..1..1..0....0..1..1..3
..3..0..0..1....0..0..2..0....1..2..0..3....2..0..0..1....1..2..0..2
CROSSREFS
Sequence in context: A331667 A053015 A089210 * A241214 A034014 A217600
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 27 2011
STATUS
approved