A184791 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock singular

6891, 100941, 100941, 1451439, 3637117, 1451439, 19143309, 125979493, 125979493, 19143309, 264517911, 3680493357, 10547404447, 3680493357, 264517911, 3635551053, 120704703909, 680930052757, 680930052757, 120704703909

Offset

1,1

Comments

Table starts

.........6891..........100941..........1451439..........19143309

.......100941.........3637117........125979493........3680493357

......1451439.......125979493......10547404447......680930052757

.....19143309......3680493357.....680930052757....69241919671789

....264517911....120704703909...54363498790639.10528776249588829

...3635551053...3913579500845.4325955651178757

..49631761863.125215483941877

.680594596269

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

Some solutions for 5X4
..0..0..0..0....1..0..0..0....0..0..0..0....0..0..0..0....1..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..1..1..0..0....0..0..0..0....0..0..0..0....0..1..0..2....0..1..0..0
..1..2..1..1....0..0..1..0....1..0..2..1....0..0..0..0....2..0..2..1
..0..1..1..1....2..2..0..2....0..0..2..1....1..2..2..1....0..0..0..0

Crossrefs

Sequence in context: A018848 A031581 A031761 * A184787 A233180 A233262

Adjacent sequences: A184788 A184789 A184790 * A184792 A184793 A184794

Keyword

nonn,tabl

Author

R. H. Hardin Jan 22 2011

Status

approved