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A207362
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.
0
2, 16, 90, 784, 5856, 42849, 353808, 2792241, 21195317, 182223001, 1372615690, 11550015841, 91115397450, 745461286801, 5965914998428, 49005684164836, 389634565985060, 3219980044337424
OFFSET
1,1
COMMENTS
Diagonal of A207368.
EXAMPLE
Some solutions for n=4
..1..1..1..1....1..0..1..0....0..1..0..1....1..1..0..1....1..1..0..1
..0..0..1..0....0..0..1..0....0..1..0..0....1..0..0..1....0..0..1..0
..0..0..1..0....0..0..1..0....0..1..0..0....0..1..0..0....0..1..0..1
..0..0..1..0....0..0..1..0....0..1..0..0....1..0..0..1....0..0..1..0
CROSSREFS
Cf. A207368.
Sequence in context: A207164 A208113 A207448 * A208008 A208550 A214824
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2012
STATUS
approved