A203539 Number of nX5 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1

0, 64, 1840, 30976, 1700580, 46485124, 1680210240, 56191754304, 1898704490980, 64488576908484, 2178774976790208, 73775014607038096, 2496772163852959252, 84495658280798176036, 2859840508384744419504, 96787655134946736339600

Offset

1,2

Comments

Column 5 of A203542

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A264275 A283689 A226010 * A116133 A010841 A226558

Adjacent sequences: A203536 A203537 A203538 * A203540 A203541 A203542

Keyword

nonn

Author

R. H. Hardin Jan 02 2012

Status

approved