A183507 Number of nX5 0..3 arrays with no element equal to the sum mod 4 of its horizontal and vertical neighbors

252, 59292, 14369472, 3486784401, 847298204784, 205891132094649

Offset

1,1

Comments

Column 5 of A183508

Links

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

Example

Some solutions for 3X5
..2..2..2..2..1....2..0..0..1..2....2..0..0..2..0....0..0..0..1..2
..2..0..1..0..0....0..0..0..2..0....0..0..1..1..0....2..2..2..1..2
..2..1..0..3..2....0..3..0..0..3....0..1..3..0..2....2..1..0..3..0

Crossrefs

Sequence in context: A180886 A078263 A289293 * A203385 A248165 A289567

Adjacent sequences: A183504 A183505 A183506 * A183508 A183509 A183510

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved