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A183809 1/16 the number of (n+1)X8 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 1
729, 18567, 418925, 10494847, 249227639, 6153770375, 148654946039, 3645190453457, 88602958444787, 2166253373649057, 52777731056211077, 1288799761305039781, 31427943533967865959, 767074334899635021939 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A183811

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions with upper left block zero for 3X8

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

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

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

CROSSREFS

Sequence in context: A017631 A209508 A016758 * A224004 A232028 A203651

Adjacent sequences:  A183806 A183807 A183808 * A183810 A183811 A183812

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 07 2011

STATUS

approved

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Last modified November 26 11:14 EST 2022. Contains 358359 sequences. (Running on oeis4.)