A199645 Number of nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to one or two horizontal and vertical neighbors

6, 1384, 134748, 15066222, 1614250077, 176701683386, 19161971644783, 2085499380111100, 226676302441401393, 24649864713781053665, 2680046304287719376722, 291407720701800854792287

Offset

1,1

Comments

Column 6 of A199647

Links

R. H. Hardin, Table of n, a(n) for n = 1..30

Example

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

Crossrefs

Sequence in context: A307871 A195646 A265473 * A300025 A107252 A358626

Adjacent sequences: A199642 A199643 A199644 * A199646 A199647 A199648

Keyword

nonn

Author

R. H. Hardin Nov 08 2011

Status

approved