|
|
A205655
|
|
Number of (n+1)X5 0..3 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.
|
|
1
|
|
|
124048, 839872, 5016144, 41013960, 353779964, 3024213232, 26605030292, 240164548160, 2196863266988, 20067825935472, 184418956321412, 1693587495714136, 15615412887393200, 143611906940924648
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4:
..0..0..2..1..0....0..0..2..1..3....1..0..0..0..0....0..2..2..2..0
..1..0..2..1..2....1..0..2..1..3....3..3..3..3..3....0..1..2..3..3
..3..1..0..3..2....2..1..0..2..0....3..3..3..3..3....0..2..0..1..0
..3..1..0..3..0....2..1..0..2..0....0..1..2..3..1....2..1..0..2..1
..0..3..2..1..0....3..2..1..3..1....3..3..3..0..2....2..2..0..1..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|