A184648 Number of (n+2)X5 0..3 arrays with each 3X3 subblock having a positive determinant

127914873, 40374310135, 11808364027889, 3298741433422598, 969942569866132207

Offset

1,1

Comments

Column 3 of A184649

Links

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

Example

Some solutions for 4X5
..0..1..2..1..1....0..2..0..0..2....0..1..1..0..2....0..1..0..1..2
..0..0..1..2..2....0..0..1..1..0....0..0..1..1..3....0..0..1..2..2
..2..0..0..1..2....2..0..0..2..2....2..0..0..2..3....2..0..0..2..0
..0..1..1..0..0....0..1..0..0..2....0..1..0..1..3....0..1..0..1..1

Crossrefs

Sequence in context: A115301 A256118 A036341 * A258262 A059092 A147715

Adjacent sequences: A184645 A184646 A184647 * A184649 A184650 A184651

Keyword

nonn

Author

R. H. Hardin Jan 18 2011

Status

approved