|
| |
|
|
A251218
|
|
Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having zero or two 1s
|
|
1
|
|
|
|
1477, 17119, 206715, 2746607, 35978029, 482274751, 6424279907, 86110233175, 1151625700234, 15428988432635, 206554265595500, 2766688606209457, 37049013254772388, 496208364895357327, 6645304659025154869
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=2
..1..1..0..0..1..1..1..1....0..0..1..1..0..1..0..0....1..1..1..1..0..1..1..1
..1..0..0..1..1..1..1..0....0..1..1..1..1..1..1..0....1..1..0..1..1..1..0..1
..1..1..0..0..1..1..1..1....0..0..1..1..0..1..0..0....1..0..0..0..1..1..1..1
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
