|
|
A235099
|
|
Number of (n+1) X (n+1) 0..6 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
|
|
0
|
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=3:
2 3 2 1 4 5 2 5 4 6 3 6 3 2 3 5 3 5 2 5
3 0 3 6 3 0 1 0 6 4 5 4 0 3 0 6 4 2 3 2
2 3 2 1 2 3 0 3 4 6 3 6 2 1 2 4 1 3 0 3
1 6 1 4 3 0 1 0 5 3 4 3 3 6 3 1 2 0 1 0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|