A183484 Number of n X n 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors

1, 28, 281, 17260, 9580528, 2596400089

Offset

1,2

Comments

Diagonal of A183492

Links

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

Example

Some solutions for 3X3
..2..3..0....0..0..0....0..0..0....0..3..3....2..2..0....0..3..3....3..3..0
..2..3..0....2..1..2....3..2..2....0..2..2....1..1..0....0..0..0....0..0..0
..0..0..0....2..1..2....3..2..2....0..1..1....2..2..0....1..1..0....2..2..0

Crossrefs

Sequence in context: A300297 A250649 A107418 * A241621 A027781 A219626

Adjacent sequences: A183481 A183482 A183483 * A183485 A183486 A183487

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved