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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 0
10, 152, 2408, 145019, 2728712, 184619038, 4805784476, 413049658833, 12238914302395, 1138561213618010, 34903160134453399, 3309017477928559490, 102378593504068235231, 9748268731866259500338, 302500699647516612601074 (list; graph; refs; listen; history; text; internal format)
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

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Last modified January 28 05:27 EST 2022. Contains 350654 sequences. (Running on oeis4.)