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A184461 Half the number of (n+1)X4 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks 3
26, 244, 3090, 42874, 616534, 9016218, 133687638, 2002023718, 30215911640, 458822048550, 7001737409868, 107286031628502, 1649589497350886, 25437988001627234, 393268526198504728, 6093317202558667778 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A184467

LINKS

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

EXAMPLE

Some solutions for 3X4

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

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

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

...

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

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

CROSSREFS

Sequence in context: A245873 A275880 A020537 * A088889 A060105 A108645

Adjacent sequences:  A184458 A184459 A184460 * A184462 A184463 A184464

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 15 2011

STATUS

approved

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Last modified March 25 10:16 EDT 2019. Contains 321470 sequences. (Running on oeis4.)