|
|
A230756
|
|
Number of (n+3)X(7+3) 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero
|
|
1
|
|
|
46949808, 90231813552, 194576103540300, 350956390609736652, 645610139671314494208, 1173949802576478433728192, 2135728868490621147879828300, 3882954971416088390717475507468
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=1
..0..2..0..1..0..1..2..1..2..2....0..0..0..0..0..2..2..0..2..0
..1..1..0..0..2..1..2..0..0..1....2..1..1..0..1..1..0..0..1..1
..2..2..1..2..0..0..1..1..0..2....2..1..1..2..0..0..1..1..0..2
..1..0..1..2..1..0..2..2..1..2....0..0..0..2..2..2..2..2..0..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|