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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.

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