A222274 Number of nX6 0..3 arrays with exactly floor(nX6/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order

8, 162, 5996, 259827, 12855928, 725139202, 46568936746, 3151092032773, 224016540173624, 16180093454621940

Offset

1,1

Comments

Column 6 of A222275

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A240410 A061250 A183813 * A061711 A316998 A075387

Adjacent sequences: A222271 A222272 A222273 * A222275 A222276 A222277

Keyword

nonn

Author

R. H. Hardin Feb 14 2013

Status

approved