A183576 Half the number of n X n 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors

0, 14, 814, 240358, 320224986, 1988200387149, 57140106100076100

Offset

1,2

Comments

Diagonal of A183584

Links

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

Example

Some solutions with a(1,1)<=1 for 3X3
..0..3..3....0..0..3....1..1..3....1..1..0....1..3..0....1..2..2....1..1..1
..0..3..0....0..3..3....1..1..3....1..0..0....1..3..0....1..1..1....1..1..1
..0..3..0....0..0..3....3..3..3....1..0..0....1..3..0....3..3..3....1..2..2

Crossrefs

Sequence in context: A042519 A050983 A360612 * A002429 A064345 A269335

Adjacent sequences: A183573 A183574 A183575 * A183577 A183578 A183579

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved