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A207913
Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically
1
2, 16, 98, 1309, 21145, 612439, 28188778, 2088382007, 241159388724, 45610488555258, 13703703085638203, 6587710602249205713, 5068113112003743826155, 6252316203337352775508286
OFFSET
1,1
COMMENTS
Diagonal of A207918
LINKS
EXAMPLE
Some solutions for n=4
..1..1..0..0....0..0..1..0....0..0..1..1....1..1..1..1....0..0..1..0
..0..0..1..0....0..0..1..0....1..0..0..1....1..1..0..0....1..1..0..0
..0..0..1..1....1..1..0..0....1..0..0..1....0..1..0..0....1..1..0..0
..1..0..0..1....1..1..0..0....0..1..0..0....0..0..1..1....0..1..0..0
CROSSREFS
Sequence in context: A207780 A207461 A207515 * A208694 A319603 A043016
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 21 2012
STATUS
approved