|
|
A196903
|
|
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4
|
|
1
|
|
|
1, 99, 4768, 141833, 5598122, 216042764, 8351540397, 321111082107, 12356839088825, 475267463574534, 18301760788493413, 704261042875463142, 27105588968030124804, 1043189030239853499999, 40149431446819879902095
(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 1's, every 3 is next to 3 0's, every 4 is next to 4 2's
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..0..0..3..0..0..0....0..0..0..0..0..3..0....0..0..0..0..0..0..0
..3..0..3..0..1..0..3....1..3..0..0..0..0..3....3..0..1..0..3..3..0
..0..0..1..0..3..0..0....0..0..0..0..3..1..0....0..0..3..0..0..0..3
..0..0..0..3..0..3..0....0..3..0..3..0..0..0....0..0..0..0..3..0..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|