A204883 Number of (n+2)X6 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly one way, and new values 0..3 introduced in row major order

61994345, 22654826769, 10058007480113, 1751372518792428, 544737295879911847

Offset

1,1

Comments

Column 4 of A204884

Links

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

Example

Some solutions for n=3
..0..0..0..0..0..1....0..0..0..1..0..1....0..1..1..0..1..1....0..0..0..0..0..1
..2..3..3..0..0..3....2..0..2..1..0..1....2..2..1..0..0..3....0..2..0..0..3..2
..0..2..1..1..2..0....1..3..1..1..2..0....0..0..1..2..1..0....2..3..1..2..2..2
..1..1..1..1..1..1....3..3..3..1..2..2....3..3..3..3..3..3....2..2..2..2..2..3
..1..1..2..3..0..2....3..1..2..3..2..0....1..1..3..1..0..0....0..1..3..1..3..3

Crossrefs

Sequence in context: A059003 A104931 A210298 * A096559 A203943 A125063

Adjacent sequences: A204880 A204881 A204882 * A204884 A204885 A204886

Keyword

nonn

Author

R. H. Hardin Jan 20 2012

Status

approved