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A185748 Number of (n+1) X 8 binary arrays with every 2 X 2 subblock trace equal to some horizontal or vertical neighbor 2 X 2 subblock trace. 1
2688, 304584, 18242392, 1188841336, 77691779712, 5075186680192, 331658427568088, 21671299631697840, 1416043303932297408, 92529833667730376464, 6046241027601786546504, 395082861406622455945776 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A185750.
LINKS
EXAMPLE
Some solutions for 3 X 8
..0..1..1..1..0..0..1..1....0..0..1..1..0..0..1..1....0..1..0..1..1..1..1..1
..0..0..1..1..1..1..1..1....0..1..1..1..0..1..1..1....0..1..0..1..1..1..1..1
..0..0..1..0..1..0..0..1....1..1..0..1..1..1..1..1....0..1..0..1..1..0..0..1
CROSSREFS
Cf. A185750.
Sequence in context: A186833 A229682 A186937 * A252404 A020424 A281406
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 2011
STATUS
approved

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Last modified May 20 01:45 EDT 2024. Contains 372703 sequences. (Running on oeis4.)