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A184466 Half the number of (n+1)X9 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks 3
16809, 5002165, 2002023718, 873679701315, 396770571117114, 184478487695574108, 87131390011496951676, 41619801566809753837565, 20050042433422012129360190, 9723279387982947487498511078 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A184467

LINKS

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

EXAMPLE

Some solutions for 3X9

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

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

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

...

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

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

CROSSREFS

Sequence in context: A017477 A017609 A096550 * A214356 A237806 A061364

Adjacent sequences:  A184463 A184464 A184465 * A184467 A184468 A184469

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 15 2011

STATUS

approved

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Last modified September 23 15:43 EDT 2020. Contains 337310 sequences. (Running on oeis4.)