A232064 Number of nX7 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal

26, 322, 3722, 38870, 457234, 4990482, 59448262, 653375842, 7789998594, 85859588738, 1022554161202, 11291242022918, 134275256384066, 1485073515174330, 17633927192912362, 195323094382344414

Offset

1,1

Comments

Column 7 of A232065

Links

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

Example

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

Crossrefs

Sequence in context: A359622 A015800 A276285 * A030647 A202292 A010942

Adjacent sequences: A232061 A232062 A232063 * A232065 A232066 A232067

Keyword

nonn

Author

R. H. Hardin, Nov 17 2013

Status

approved