|
|
A197089
|
|
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4
|
|
1
|
|
|
1, 161, 7537, 289564, 12635748, 522569033, 21989908007, 923559415946, 38737498552503, 1625808615727565, 68233833241429320, 2863571252883915815, 120178359677506216775, 5043597906899270802555, 211668526758336137032851
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 1's
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..0..0..2..2..0..0....0..0..0..0..0..3..0....0..0..0..0..0..0..0
..0..3..1..2..2..0..0....0..1..0..3..0..0..0....0..3..0..0..0..3..0
..3..0..0..0..1..3..0....0..3..0..1..0..0..3....0..3..0..0..0..1..0
..0..0..3..0..0..0..0....0..0..0..0..0..3..0....0..0..0..0..3..0..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|