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A184460 Half the number of (n+1)X3 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks 1
7, 35, 244, 1693, 12324, 89908, 667600, 5002165, 37777626, 286971238, 2190689600, 16790412468, 129127710164, 995937115474, 7700689112570, 59672216385587, 463283019198236, 3602944011508868, 28062509230063226, 218870000234417062 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A184467

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 5X3

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

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

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

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

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

...

...E..P.......M..E.......E..M.......E..P.......M..E.......M..E.......M..M...

...E..P.......P..E.......P..M.......M..M.......E..P.......E..E.......E..E...

...M..E.......P..E.......P..E.......E..E.......M..E.......P..P.......P..E...

...M..E.......M..E.......E..E.......P..E.......E..P.......M..E.......P..E...

CROSSREFS

Sequence in context: A274073 A177261 A105926 * A096686 A165505 A165639

Adjacent sequences:  A184457 A184458 A184459 * A184461 A184462 A184463

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 15 2011

STATUS

approved

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Last modified September 25 12:45 EDT 2020. Contains 337344 sequences. (Running on oeis4.)