|
|
A183252
|
|
Half the number of nX6 binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies
|
|
1
|
|
|
6, 210, 7954, 417190, 23226996, 1333831052, 78105333988, 4635786110412, 277890240523800, 16785123061670988, 1019971463327377356, 62283161216818806836, 3818626448625617011996, 234919716668014392969048
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions with a(1,1)=0 for 3X6
..0..1..0..1..1..0....0..1..1..1..1..0....0..0..0..1..0..1....0..0..1..1..0..1
..0..0..0..0..1..1....1..1..0..0..0..0....0..1..0..1..0..1....0..1..0..0..1..1
..1..1..1..0..1..0....0..0..1..1..0..1....1..0..1..1..1..0....0..1..0..1..0..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|