A201537 Number of nX6 0..2 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor

13, 410, 16393, 983981, 61807736, 3762507339, 208164634003, 10298954399450, 457194210355549, 18377434753379050, 675525914078702215, 22913890806174601101, 722808878339707158532, 21342091118575178714919

Offset

1,1

Comments

Column 6 of A201539

Links

R. H. Hardin, Table of n, a(n) for n = 1..53

Example

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

Crossrefs

Sequence in context: A126086 A055203 A088919 * A258178 A266486 A142484

Adjacent sequences: A201534 A201535 A201536 * A201538 A201539 A201540

Keyword

nonn

Author

R. H. Hardin Dec 02 2011

Status

approved