|
|
A232960
|
|
Number of 6Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero
|
|
1
|
|
|
1024, 50421, 5840289, 609853251, 66226131273, 7168373617095, 777971521023633, 84438762415260969, 9167008080471861213, 995247064980829474743, 108055419728642864698437, 11731821554897060580948021
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
Empirical recurrence of order 86 (see link above)
|
|
EXAMPLE
|
Some solutions for n=2
..0..0....0..1....0..2....0..1....0..0....0..2....0..0....0..2....0..1....0..2
..0..2....1..0....3..2....0..2....0..0....2..2....2..2....3..1....0..2....2..0
..3..2....2..3....3..2....0..0....0..1....2..3....3..3....1..1....0..2....0..0
..3..2....1..0....2..2....0..0....1..0....1..0....1..1....0..1....0..1....0..1
..0..1....1..1....2..0....1..0....2..0....0..1....1..1....0..1....1..0....0..2
..3..1....3..3....0..2....1..1....2..0....0..2....0..1....0..0....1..1....0..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|