A183375 Number of n X n binary arrays with no element equal to the mod 3 sum of its king-move neighbors

1, 5, 28, 225, 2767, 64530, 2952294, 238729120, 34520238211

Offset

1,2

Comments

Diagonal of A183380

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for 5X5
..1..1..0..0..1....0..0..0..1..0....1..1..0..1..1....1..0..0..0..0
..0..1..0..0..0....1..0..1..0..1....1..0..1..1..0....0..0..0..1..0
..0..1..0..1..0....1..1..1..0..1....0..0..1..1..0....1..0..0..0..0
..1..1..0..0..0....0..1..1..1..1....0..0..1..1..1....0..0..0..0..0
..0..0..0..1..0....0..1..0..0..1....0..1..1..0..1....0..1..0..0..1

Crossrefs

Sequence in context: A107875 A340904 A038172 * A000530 A121674 A306181

Adjacent sequences: A183372 A183373 A183374 * A183376 A183377 A183378

Keyword

nonn

Author

R. H. Hardin Jan 04 2011

Status

approved