|
|
A207780
|
|
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 0 1 vertically
|
|
1
|
|
|
2, 16, 98, 791, 6766, 65094, 786907, 9855231, 142116676, 2459545057, 46309750425, 999589825419, 26202502382134, 768926273969151, 25878896800392858, 1098191860946291476, 52205734467966457603, 2867736141204451650414
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..0..1..0....1..0..0..1....0..1..0..1....1..1..1..1....1..0..1..0
..0..1..0..0....0..1..0..1....0..1..0..1....1..1..1..1....1..1..0..1
..1..0..0..1....0..0..1..0....1..0..1..0....1..1..1..1....0..1..0..1
..1..0..1..0....1..0..1..0....1..0..1..0....1..1..1..0....0..0..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|