A222672 Number of nX7 0..2 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order

10, 288, 3458, 212842, 4030527, 244592240, 5655834167, 433607685391, 11560192314100, 975276334243798, 27718869041797715, 2433959385004166383, 70724597772600295251, 6285792274284160237470, 184016099741668376440723

Offset

1,1

Comments

Column 7 of A222673

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

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

Crossrefs

Sequence in context: A239774 A360341 A049387 * A024295 A291658 A159960

Adjacent sequences: A222669 A222670 A222671 * A222673 A222674 A222675

Keyword

nonn

Author

R. H. Hardin Feb 28 2013

Status

approved