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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A227442.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

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

Adjacent sequences:  A227438 A227439 A227440 * A227442 A227443 A227444

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 11 2013

STATUS

approved

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Last modified August 12 23:52 EDT 2022. Contains 356077 sequences. (Running on oeis4.)