A183518 Number of n X n 0..2 arrays with each element equal to either the sum mod 3 of its horizontal and vertical neighbors or the sum mod 3 of its diagonal and antidiagonal neighbors

1, 9, 101, 3507, 371691, 89738569

Offset

1,2

Comments

Diagonal of A183526

Links

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

Example

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

Crossrefs

Sequence in context: A101563 A269732 A007133 * A374422 A339643 A083452

Adjacent sequences: A183515 A183516 A183517 * A183519 A183520 A183521

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved