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A203284
Number of nX7 binary arrays with every element neighboring horizontally or vertically both a 0 and a 1
1
0, 256, 6528, 311364, 14644480, 674752576, 31747280900, 1482014064400, 69426540922112, 3248414978337424, 152051978649072512, 7116397401627306244, 333073866254926765092, 15589003682173336070436, 729619114019766057116208
OFFSET
1,2
COMMENTS
Column 7 of A203285
LINKS
EXAMPLE
Some solutions for n=3
..1..1..0..1..1..0..0....1..0..1..1..0..0..1....1..0..0..1..0..0..0
..0..1..0..0..0..0..1....1..0..0..0..1..1..1....1..0..0..1..1..1..1
..0..1..0..1..1..0..1....1..0..1..1..1..0..0....1..0..0..1..1..0..0
CROSSREFS
Sequence in context: A283339 A128698 A283576 * A321832 A351196 A016900
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 31 2011
STATUS
approved