A239170 Number of (n+1) X (n+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors.

6, 82, 9604, 4140964, 9704723126, 108383467365104, 5817146886160257060

Offset

1,1

Comments

Diagonal of A239178.

Links

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

Example

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

Crossrefs

Cf. A239178.

Sequence in context: A068253 A188806 A155811 * A112462 A283198 A186661

Adjacent sequences: A239167 A239168 A239169 * A239171 A239172 A239173

Keyword

nonn

Author

R. H. Hardin, Mar 11 2014

Status

approved