|
| |
|
|
A233489
|
|
Number of (n+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards
|
|
1
|
|
|
|
16928, 26851581, 325881917874, 30258000792128359, 21465796875243969838158, 116334766873906705110905737848, 4816818414167397900878136977065117439, 1523736584959855755536079832732491749466846054
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=1
..2..1..2....0..1..1....2..2..2....1..0..2....1..2..2....2..1..2....2..0..0
..2..0..0....0..2..2....0..0..2....2..1..0....0..0..1....2..0..2....1..0..0
..2..1..1....1..0..0....0..1..1....0..1..1....0..0..2....0..1..1....2..2..0
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
