A205582 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..2 introduced in row major order

14, 550, 48401, 8952876, 3619876639, 3232900348158

Offset

1,1

Comments

Diagonal of A205590

Links

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

Example

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

Crossrefs

Sequence in context: A292966 A109773 A294835 * A217582 A002010 A166185

Adjacent sequences: A205579 A205580 A205581 * A205583 A205584 A205585

Keyword

nonn

Author

R. H. Hardin Jan 29 2012

Status

approved