A205746 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order

14, 284, 8926, 383290, 28155907, 2917623614, 528507252157, 138111752968498, 64850139038419406, 44000031319042068352

Offset

1,1

Comments

Diagonal of A205753

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4
..0..1..0..0..2....0..0..0..0..0....0..0..1..2..0....0..1..0..1..2
..1..1..0..2..2....0..0..0..0..0....1..0..1..2..2....2..1..2..1..0
..0..2..0..1..0....2..1..2..1..2....1..2..1..0..1....0..2..1..2..1
..2..0..1..2..1....2..1..2..2..2....0..1..2..1..2....2..2..2..2..2
..0..0..1..2..1....2..0..0..1..0....2..1..0..0..2....0..1..0..1..0

Crossrefs

Sequence in context: A279113 A291099 A053101 * A281607 A027401 A259432

Adjacent sequences: A205743 A205744 A205745 * A205747 A205748 A205749

Keyword

nonn

Author

R. H. Hardin Jan 30 2012

Status

approved