A184475 1/6 the number of (n+2)X9 0..2 arrays with each 3X3 subblock containing one of one value, four of another, and four of the last

559305, 645837, 747735, 878625, 1219455, 1782585, 2909367

Offset

1,1

Comments

Column 7 of A184477

Links

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

Example

Some solutions with a(1,1)=0 for 4X9
..0..1..2..2..0..2..2..1..1....0..1..1..2..1..1..0..2..1
..0..1..1..2..0..1..2..1..0....0..1..0..2..1..0..0..1..0
..0..1..0..2..0..0..2..1..2....0..2..1..2..2..1..0..1..1
..0..1..2..2..0..2..2..1..1....0..1..1..2..1..1..0..2..1

Crossrefs

Sequence in context: A202720 A235969 A203659 * A233916 A206194 A250534

Adjacent sequences: A184472 A184473 A184474 * A184476 A184477 A184478

Keyword

nonn

Author

R. H. Hardin Jan 15 2011

Status

approved