|
|
A236270
|
|
Number of (n+1)X(n+1) 0..2 arrays with the upper median unequal to the lower median in every 2X2 subblock
|
|
0
|
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=2
..2..1..1....2..2..1....0..1..2....1..2..0....0..1..0....2..0..1....0..2..0
..1..2..2....1..0..0....2..0..0....1..2..1....1..0..1....2..1..0....2..1..0
..0..0..0....2..2..2....0..2..2....2..0..2....2..0..2....2..0..1....0..0..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|