|
| |
|
|
A266006
|
|
Number of n X n integer arrays with each element equal to the number of horizontal and antidiagonal neighbors equal to itself.
|
|
0
|
|
|
|
1, 1, 6, 9, 70, 473, 10708, 348557, 4845667, 64933909, 9012724549, 927373554115, 90953901974416, 39400271219843985, 17050653134989917553, 3479394369545306732310
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,3
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..2..2..1....0..2..2..1....0..1..2..2....0..2..2..0....0..2..2..0
..2..2..1..0....2..2..1..0....1..2..2..0....2..2..1..1....2..2..1..0
..0..2..2..0....0..2..2..1....0..1..2..2....0..2..2..1....0..1..2..2
..2..2..1..1....2..2..1..0....1..2..2..0....2..2..1..0....0..2..2..0
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
