A184789 Number of (n+2)X5 0..2 arrays with each 3X3 subblock singular.

1451439, 125979493, 10547404447, 680930052757, 54363498790639, 4325955651178757, 341301081544065511, 27648236452749367053, 2246186004487991819871, 182943306389766685985005

Offset

1,1

Comments

Column 3 of A184791

Links

R. H. Hardin, Table of n, a(n) for n = 1..71

Example

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

Crossrefs

Sequence in context: A254584 A254591 A254359 * A003939 A364783 A003932

Adjacent sequences: A184786 A184787 A184788 * A184790 A184791 A184792

Keyword

nonn

Author

R. H. Hardin, Jan 22 2011

Status

approved