|
| |
|
|
A207746
|
|
Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically
|
|
1
|
|
|
|
2, 16, 102, 900, 8778, 104976, 1341606, 20115225, 316615970, 5707953601, 106646250804, 2244863934369, 48526426817904, 1167193108267264, 28644642089792472, 774480816028370889, 21267135535735987266
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..1..0..0....1..1..0..1....0..1..0..1....1..1..0..1....0..1..0..0
..0..1..0..1....0..0..0..0....1..1..0..0....1..1..0..1....1..1..0..0
..0..0..0..0....1..1..0..1....1..1..0..1....0..1..0..0....1..0..0..0
..0..1..0..1....1..0..0..0....1..0..0..0....1..1..0..1....0..1..0..0
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
