A204082 Number of nX6 0..3 arrays with every element neighboring horizontally or vertically both a 0 and a 1

0, 324, 37636, 3904576, 553472676, 94591923364, 11178644528704, 1741263873230116, 247992042168144036, 35500554210059159104, 5153306429562765872644, 741467819771090933580900

Offset

1,2

Comments

Column 6 of A204084

Links

R. H. Hardin, Table of n, a(n) for n = 1..45

Example

Some solutions for n=5
..0..0..3..3..0..0....1..0..0..0..0..0....1..0..1..3..0..1....2..0..0..2..0..0
..1..1..1..1..1..1....1..3..1..1..1..1....1..0..1..2..0..1....1..1..1..1..1..1
..0..1..0..0..3..3....0..3..1..2..0..1....3..0..2..0..0..0....0..2..0..0..3..2
..0..3..0..1..0..0....0..2..0..0..0..0....1..1..2..1..1..0....0..1..0..3..0..0
..1..1..0..1..1..1....1..1..0..1..1..0....0..0..0..1..1..0....0..1..0..1..1..1

Crossrefs

Sequence in context: A128381 A128992 A221399 * A088216 A121001 A203029

Adjacent sequences: A204079 A204080 A204081 * A204083 A204084 A204085

Keyword

nonn

Author

R. H. Hardin Jan 10 2012

Status

approved