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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 14 2013
STATUS
approved

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Last modified May 20 13:56 EDT 2024. Contains 372716 sequences. (Running on oeis4.)