|
|
A207351
|
|
Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically
|
|
1
|
|
|
42, 1764, 8928, 43260, 186002, 684324, 2367656, 8000806, 26057006, 82907430, 260627110, 806084422, 2476671718, 7545089216, 22861190904, 68993933764, 207422313718, 622180142516, 1862113694818, 5564560256320, 16608301418960
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..1..0..1....0..1..0..0....1..0..1..0....0..1..0..0....1..1..1..1
..1..0..0..1....0..1..0..1....0..0..1..0....0..1..0..1....1..1..0..1
..0..0..1..0....1..0..1..0....1..1..0..1....1..0..1..0....0..0..1..0
..1..1..1..0....1..0..0..1....1..0..1..0....1..1..1..0....1..1..1..1
..1..0..0..1....0..1..0..1....0..1..0..0....0..1..0..1....0..1..0..1
..0..1..0..1....1..0..1..0....1..0..0..1....1..0..0..1....0..0..1..0
..0..0..1..0....1..1..0..1....1..0..1..0....0..0..1..0....1..1..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|