A184498 1/12 the number of (n+2)X(n+2) 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last

252, 4546, 50590, 425814, 3530858

Offset

1,1

Comments

Diagonal of A184505

Links

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

Example

Some solutions with a(1,1)=0 for 4X4
..0..1..1..1....0..2..0..2....0..2..1..0....0..0..1..1....0..0..1..1
..2..2..2..0....0..0..1..0....2..1..2..2....0..0..1..1....1..0..2..1
..1..2..2..2....0..2..2..2....1..2..2..1....0..1..2..0....0..0..1..1
..1..1..0..0....0..2..0..2....2..0..1..2....1..1..1..0....0..0..1..1

Crossrefs

Sequence in context: A027815 A271496 A218418 * A169713 A099059 A151610

Adjacent sequences: A184495 A184496 A184497 * A184499 A184500 A184501

Keyword

nonn

Author

R. H. Hardin Jan 16 2011

Status

approved