A222487 Number of nX7 0..2 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order

10, 152, 2408, 145019, 2728712, 184619038, 4805784476, 413049658833, 12238914302395, 1138561213618010, 34903160134453399, 3309017477928559490, 102378593504068235231, 9748268731866259500338, 302500699647516612601074

Offset

1,1

Comments

Column 7 of A222488

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

Sequence in context: A253124 A178298 A251730 * A307352 A345348 A349490

Adjacent sequences: A222484 A222485 A222486 * A222488 A222489 A222490

Keyword

nonn

Author

R. H. Hardin Feb 22 2013

Status

approved