A240641 Number of nX6 0..3 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..3 introduced in row major order

41, 10072, 2413198, 579476701, 139138607313, 33408897045776, 8021872340896987, 1926147852876420067, 462491172805951156774, 111049673372896355573468, 26664357370024596504291771, 6402431748862885892818595024

Offset

1,1

Comments

Column 6 of A240642

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

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

Crossrefs

Sequence in context: A282273 A208396 A240704 * A106203 A289416 A199255

Adjacent sequences: A240638 A240639 A240640 * A240642 A240643 A240644

Keyword

nonn

Author

R. H. Hardin, Apr 09 2014

Status

approved