|
| |
|
|
A267248
|
|
Number of 5Xn binary arrays with row sums nondecreasing and columns lexicographically nondecreasing.
|
|
0
|
|
|
|
6, 63, 486, 3351, 20040, 107015, 516084, 2278687, 9303052, 35428544, 126753732, 428651446, 1377310514, 4223642819, 12409437728, 35050866249, 95459908872, 251341796912, 641282264972, 1588863292072
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..0..0..0....0..0..0..1....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..1..1....0..0..0..1....0..0..0..1....0..0..0..1....0..0..0..0
..1..1..0..0....0..0..1..0....0..1..1..0....0..0..1..0....0..0..0..1
..1..1..0..1....1..1..0..1....1..0..1..1....1..1..0..1....0..0..1..1
..1..1..1..1....0..1..1..1....0..1..1..1....0..1..1..1....1..1..1..1
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
