A184372 1/3 the number of (n+1)X6 0..2 arrays with every 2X2 subblock having at least two equal elements connected horizontally or vertically

58077, 15754461, 4210059673, 1127256514575, 301753233626727, 80778452206783159, 21624059735461675335, 5788675585887326994869, 1549605510397241533259837, 414823258633731476239250435

Offset

1,1

Comments

Column 5 of A184376

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X6 with a(1,1)=0
..0..0..0..0..2..1....0..0..0..0..2..1....0..0..0..0..0..2....0..0..0..0..0..0
..2..0..0..0..1..1....2..0..0..0..0..0....0..0..0..1..0..0....2..0..0..1..0..2
..1..1..1..0..1..2....2..0..2..0..0..2....1..1..2..2..2..0....1..0..2..1..0..0

Crossrefs

Sequence in context: A124729 A345565 A345820 * A237402 A210106 A227496

Adjacent sequences: A184369 A184370 A184371 * A184373 A184374 A184375

Keyword

nonn

Author

R. H. Hardin Jan 12 2011

Status

approved