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A227441
Number of n X 5 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 6 binary array having two adjacent 1's and two adjacent 0's.
1
32, 932, 24568, 636996, 16517429, 428106288, 11089818502, 287216470434, 7438206463442, 192627120115467, 4988415429339854, 129183253864605762, 3345409035962645279, 86634725216940266856, 2243544511793704829943
OFFSET
1,1
COMMENTS
Column 5 of A227442.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..1..0....0..0..0..1..0....0..0..0..1..1....0..0..1..0..0
..1..0..1..1..0....1..0..0..0..1....1..1..0..1..0....0..0..0..0..1
..0..0..1..0..1....1..1..1..1..1....0..0..1..1..0....1..0..0..1..0
..1..1..0..1..0....1..0..0..1..1....1..1..0..1..0....0..1..0..0..1
CROSSREFS
Sequence in context: A160314 A241223 A283412 * A067820 A263818 A220743
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 11 2013
STATUS
approved