A232196 Number of (n+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, vertical or antidiagonal neighbor

15, 2129, 2064527, 16237318767, 1024215443152687, 515298827433540888151, 2068734726208811311397436981, 66293423431894237647538826697163203

Offset

1,1

Comments

Diagonal of A232204

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A208784 A126681 A263162 * A222881 A229844 A208171

Adjacent sequences: A232193 A232194 A232195 * A232197 A232198 A232199

Keyword

nonn

Author

R. H. Hardin, Nov 20 2013

Status

approved