|
| |
|
|
A190533
|
|
Number of (n+2)X(n+2) symmetric binary matrices without the pattern 0 1 1 vertically or horizontally
|
|
1
|
|
|
|
42, 332, 3660, 59408, 1405148, 49455712, 2586803564, 202549927174, 23737296725976, 4174330956088592, 1101527208080551428, 436589349514722980996, 259916332325245438667936
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for 4X4
..0..0..0..1....0..0..1..0....1..1..0..0....0..0..0..0....0..1..0..1
..0..0..0..1....0..0..1..0....1..0..0..0....0..1..0..1....1..1..0..0
..0..0..0..1....1..1..0..0....0..0..0..1....0..0..0..0....0..0..0..0
..1..1..1..0....0..0..0..1....0..0..1..0....0..1..0..1....1..0..0..1
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
