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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
OFFSET
1,1
COMMENTS
Column 8 of A184467
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 15 2011
STATUS
approved