A203489 Number of nX6 0..2 arrays with row sums equal and column sums unequal to adjacent columns

96, 20596, 3171708, 442135180, 61706303456, 8496020082856, 1172134178554204, 161068791865426940

Offset

1,1

Comments

Column 6 of A203491

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A299950 A269208 A295597 * A208794 A276099 A233161

Adjacent sequences: A203486 A203487 A203488 * A203490 A203491 A203492

Keyword

nonn

Author

R. H. Hardin Jan 02 2012

Status

approved