|
|
A231030
|
|
Number of n X 7 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero.
|
|
1
|
|
|
0, 10162, 2049324, 1740086452, 1050541512334, 688099769580280, 441589771066454894, 284877908767181431748, 183540635813549508209004, 118290502618097762855637884, 76230841327679401437205021568
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=3
..0..1..0..0..1..2..2....0..1..0..0..1..2..1....0..1..0..1..0..2..0
..2..1..2..2..1..0..1....2..0..2..0..2..0..2....2..0..2..1..1..1..0
..0..0..1..0..2..0..2....0..1..0..1..0..0..1....1..0..2..2..0..2..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|