|
| |
|
|
A233030
|
|
Number of (n+1)X(3+1) 0..3 arrays with row and column sums nondecreasing, and no adjacent elements equal
|
|
0
|
|
|
|
333, 3132, 55642, 566933, 7169782, 74939353, 839537894, 8735284526, 93454206487, 969444236906, 10189585915899
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=3
..2..0..2..1....1..0..3..2....0..1..2..1....0..1..0..2....0..1..0..1
..1..2..1..2....0..3..0..3....2..3..0..3....1..3..2..0....2..0..3..0
..0..3..2..3....2..0..3..2....3..0..3..2....0..2..3..2....3..2..1..2
..1..2..3..2....1..2..1..3....0..3..2..3....3..1..2..3....0..3..2..3
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
