|
|
A235021
|
|
Number of (n+1) X (3+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
|
|
1
|
|
|
1248, 4312, 14800, 51220, 177520, 617600, 2152744, 7527124, 26367488, 92632604, 326009192, 1150507192, 4067126368, 14415310196, 51176035576, 182134771204, 649220616600, 2319643303000, 8300224862256, 29766948184132, 106901780220416
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
Empirical recurrence of order 63 (see link above).
|
|
EXAMPLE
|
Some solutions for n=4:
4 0 2 1 3 5 3 5 4 3 1 3 4 2 4 5 5 4 2 4
5 4 3 5 5 4 5 4 0 2 3 2 5 0 5 3 0 2 3 2
1 3 5 4 1 3 1 3 5 4 2 4 4 2 4 5 4 3 1 3
0 5 4 0 5 4 5 4 1 3 4 3 0 1 0 4 0 2 3 2
1 3 5 4 1 3 1 3 5 4 2 4 2 0 2 3 4 3 1 3
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|