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A208282
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 0 vertically
1
2, 16, 102, 984, 9900, 119580, 1604862, 24229696, 403795242, 7388858420, 147219127000, 3175214941800, 73720244775658, 1833809960513104, 48667824127404150, 1372862920890984032, 41025768742532649684
OFFSET
1,1
COMMENTS
Diagonal of A208287
LINKS
EXAMPLE
Some solutions for n=4
..1..1..1..1....1..1..0..0....1..0..1..0....0..1..1..0....1..1..1..0
..0..1..0..1....1..0..1..0....1..1..0..1....0..1..1..0....0..1..1..0
..1..1..1..1....1..1..0..0....1..1..1..1....0..1..1..0....1..1..1..0
..0..1..0..1....1..1..1..0....1..1..1..1....0..1..1..0....1..1..1..0
CROSSREFS
Sequence in context: A207248 A208033 A208159 * A207236 A207955 A207494
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 25 2012
STATUS
approved