A210275 Half the number of (n+1)X8 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences

7895856, 19537398722, 48490791961375, 120443009719061218, 299192733780770135628, 743245692531829336470460, 1846356382998737252290206762, 4586687051164609867229232781805

Offset

1,1

Comments

Column 7 of A210276

Links

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

Example

Some solutions for n=4
..2..0..1..2..2..1..1..1....0..2..2..0..0..1..0..1....2..1..2..1..2..2..1..2
..1..0..1..2..0..0..0..1....1..2..0..2..1..2..2..2....1..1..0..0..1..2..2..2
..0..0..2..1..1..2..2..1....1..2..1..1..1..2..1..1....2..1..1..1..1..0..0..0
..2..0..1..1..2..1..1..0....1..1..1..0..1..2..1..2....0..1..2..1..0..0..1..2
..1..0..0..1..1..2..0..0....0..1..2..1..2..1..0..1....1..1..1..0..1..0..0..2

Crossrefs

Sequence in context: A205368 A235222 A239588 * A346029 A237338 A360905

Adjacent sequences: A210272 A210273 A210274 * A210276 A210277 A210278

Keyword

nonn

Author

R. H. Hardin Mar 19 2012

Status

approved