A232571 Number of (n+1) X (n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, vertically or antidiagonally.

16, 1064, 767942, 4107586864, 164594058779448, 50532651470537361772, 116497839389906889442230276

Offset

1,1

Comments

Diagonal of A232579.

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Cf. A232579.

Sequence in context: A029701 A281984 A266066 * A203096 A210822 A265622

Adjacent sequences: A232568 A232569 A232570 * A232572 A232573 A232574

Keyword

nonn

Author

R. H. Hardin, Nov 26 2013

Status

approved