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A203401
Number of (n+2)X(n+2) binary arrays avoiding patterns 000 and 111 in rows and columns
0
102, 2030, 60232, 3858082, 446672706, 101578277384, 43680343039806, 36133311325799774, 57061338836892846628, 172603583392706027305210
OFFSET
1,1
COMMENTS
Diagonal of A203407
EXAMPLE
Some solutions for n=3
..1..0..1..0..0....0..1..0..1..0....1..0..0..1..0....1..0..0..1..0
..1..0..0..1..0....0..0..1..0..0....0..0..1..0..0....0..1..1..0..1
..0..1..1..0..1....1..1..0..1..1....1..1..0..1..1....1..0..1..0..1
..1..0..1..0..0....0..0..1..0..0....0..1..1..0..0....0..1..0..1..0
..0..1..0..1..0....1..0..1..1..0....0..0..1..0..1....1..0..1..1..0
CROSSREFS
Sequence in context: A163435 A223308 A230737 * A217331 A284448 A274252
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 01 2012
STATUS
approved