A183535 Number of n X n 0..3 arrays with each element equal to either the sum mod 4 of its horizontal and vertical neighbors or the sum mod 4 of its diagonal and antidiagonal neighbors

1, 16, 133, 16704, 1150368

Offset

1,2

Comments

Diagonal of A183541

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A335560 A253224 A334979 * A197278 A237880 A284338

Adjacent sequences: A183532 A183533 A183534 * A183536 A183537 A183538

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved