A203036 Number of 6Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns

4, 4780, 6829968, 13106373164, 28369308592126

Offset

1,1

Comments

Row 6 of A203031

Links

Table of n, a(n) for n=1..5.

Example

Some.solutions.for.n=5
..2..2..3..1..2....1..3..2..0..3....3..1..1..0..3....3..2..2..1..2
..3..2..3..2..0....1..3..1..2..2....0..2..3..3..0....2..3..0..2..3
..0..1..3..3..3....1..3..2..0..3....0..2..2..1..3....2..2..2..1..3
..1..2..3..1..3....0..2..1..3..3....2..1..2..1..2....0..1..3..3..3
..1..2..3..3..1....2..1..3..2..1....0..0..2..3..3....2..0..3..3..2
..2..2..3..0..3....0..1..2..3..3....0..1..2..2..3....3..2..1..2..2

Crossrefs

Sequence in context: A274972 A344670 A344671 * A306962 A102205 A283663

Adjacent sequences: A203033 A203034 A203035 * A203037 A203038 A203039

Keyword

nonn

Author

R. H. Hardin Dec 27 2011

Status

approved