|
| |
|
|
A266043
|
|
Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any vertical or antidiagonal neighbor equal to 3-1.
|
|
1
|
|
|
|
2, 8, 30, 146, 620, 3018, 14356, 72070, 366704, 1914616, 10149476, 54660630, 297665832, 1637684396, 9080967528, 50697416118, 284611241532, 1605400483260, 9092172075452, 51674059356836, 294578579777600, 1683830972093940
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=4
..2..0..0..2....0..1..2..0....2..2..1..0....2..0..2..0....2..1..1..1
..1..1..1..1....0..2..1..1....2..2..0..0....1..1..1..1....2..2..0..0
..2..0..0..2....1..2..2..0....1..1..0..1....0..0..2..2....2..1..0..0
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
