|
|
A235787
|
|
Number of (4+1) X (n+1) 0..2 arrays with the difference of the upper and lower median value of each 2 X 2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
|
|
1
|
|
|
17837, 924323, 41559689, 1647458581, 60893670493, 2094824462739, 68611567225003, 2143539826346751, 64564856564377493, 1881089804262142705, 53326114376091385649, 1475596467988352153487, 40006226305036094218101
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=1
..0..0....0..2....2..0....0..2....1..2....0..0....1..0....2..0....1..0....0..2
..1..2....1..2....2..0....2..0....2..0....2..1....2..2....0..1....0..1....2..0
..2..0....2..1....1..2....0..1....1..0....1..1....0..1....2..2....0..2....1..0
..1..0....2..0....2..0....1..1....0..2....0..1....2..2....2..0....1..2....2..2
..1..2....1..2....2..2....1..2....1..2....0..0....1..2....1..1....0..0....1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|