|
| |
|
|
A183780
|
|
Half the number of (n+1)X8 binary arrays with no 2X2 subblock having exactly 2 ones
|
|
1
|
|
|
|
1425, 24001, 344483, 5431499, 82573675, 1284649009, 19815396763, 307446383061, 4760294305144, 73819487702999, 1144141214145647, 17740853191335851, 275047069987337151, 4264758060628986689, 66124561853525742255
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions with a(1,1)=0 for 3X8
..0..0..0..0..0..1..1..1....0..1..1..1..1..1..0..1....0..0..1..0..0..1..1..1
..0..0..0..0..0..0..1..1....0..0..1..0..1..1..1..1....0..0..0..0..1..1..0..1
..0..1..0..1..0..1..1..1....1..0..0..0..0..1..1..0....1..0..0..0..0..1..1..1
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
