A217449 Number of n X n arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..2 n X n array

3, 15, 613, 60821, 28176327, 45755747495, 283827195520911

Offset

1,1

Comments

Diagonal of A217457

Links

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

Example

Some solutions for n=3
..1..1..1....2..1..1....0..0..0....1..1..2....1..1..1....0..0..0....2..0..0
..1..1..0....1..2..1....1..0..0....1..2..0....1..2..0....0..0..0....0..0..0
..2..0..0....1..1..1....1..1..2....1..0..0....2..0..0....1..0..1....1..0..1

Crossrefs

Sequence in context: A138303 A338293 A267096 * A167220 A296939 A077399

Adjacent sequences: A217446 A217447 A217448 * A217450 A217451 A217452

Keyword

nonn

Author

R. H. Hardin Oct 03 2012

Status

approved