A203034 Number of 4Xn 0..3 arrays with row sums equal and column sums unequal to adjacent columns

4, 356, 50716, 7788648, 1267847188, 219705087676, 39711390609500

Offset

1,1

Comments

Row 4 of A203031

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A214182 A214233 A334359 * A378870 A215827 A366469

Adjacent sequences: A203031 A203032 A203033 * A203035 A203036 A203037

Keyword

nonn

Author

R. H. Hardin Dec 27 2011

Status

approved