A183592 1/24 of the number of (n+1) X 8 0..3 arrays with every 2 X 2 subblock containing exactly three distinct values.

3875968, 6471298096, 10588548225946, 17377952662176322, 28508855963437333072, 46772256761288023913418

Offset

1,1

Comments

Column 7 of A183594.

Links

Table of n, a(n) for n=1..6.

Example

Some solutions with a(1,1) = 0 for 3 X 8
..0..0..0..0..2..3..3..0....0..0..0..0..2..2..1..3....0..0..0..0..0..3..3..0
..2..1..2..1..0..2..1..0....2..1..2..1..1..3..1..2....2..1..2..1..2..0..1..1
..0..0..0..0..2..1..0..3....0..0..0..0..2..1..2..0....0..0..0..0..1..2..0..2

Crossrefs

Cf. A183594.

Sequence in context: A344921 A204812 A205421 * A069375 A247088 A204319

Adjacent sequences: A183589 A183590 A183591 * A183593 A183594 A183595

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved