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A222289 Number of nX7 0..1 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order 1
5, 144, 1427, 40321, 564838, 17801910, 262048125, 8550246097, 129184703815, 4294346570524, 66002018148195, 2218403489369930, 34478463977532598, 1167416501197133512, 18284642742630658357, 622321211264493492467 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A222290

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

EXAMPLE

Some solutions for n=4

..0..1..0..1..1..1..1....0..0..0..0..0..0..0....0..0..1..1..1..1..1

..1..1..1..0..1..1..1....0..0..0..1..0..1..0....0..1..0..1..1..1..1

..1..1..1..0..1..1..1....0..0..1..0..0..0..0....1..1..0..0..1..1..1

..1..1..0..1..1..1..1....0..0..0..1..0..0..0....1..1..0..1..1..1..1

CROSSREFS

Sequence in context: A171776 A277401 A208874 * A134503 A282836 A320414

Adjacent sequences:  A222286 A222287 A222288 * A222290 A222291 A222292

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 14 2013

STATUS

approved

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Last modified July 4 12:18 EDT 2020. Contains 335448 sequences. (Running on oeis4.)