|
| |
|
|
A186833
|
|
Number of (n+2)X4 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.
|
|
1
|
|
|
|
2688, 19904, 147428, 1075071, 6019798, 33731024, 188814612, 897952936, 4272342678, 20338694068, 87016169948, 372379475914, 1594343736734, 6342958109897, 25240403647650, 100475230637492, 379502308464848
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for 6X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..1..0..0....0..0..1..0....0..0..0..1....0..0..1..1....0..0..0..1
..0..0..0..1....0..1..0..1....0..0..1..1....0..0..1..0....0..0..0..1
..0..1..0..1....1..0..1..0....0..1..0..0....0..0..0..0....1..0..0..1
..0..1..1..1....0..1..1..0....0..1..0..0....1..1..0..1....0..1..1..0
..1..1..1..0....0..1..1..1....0..1..0..1....1..0..1..1....1..1..0..1
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
