|
Search: id:A163706
|
|
|
| A163706 |
|
Number of nX4 binary arrays with all 1s connected, a path of 1s from left column to lower right corner, and no 1 having more than two 1s adjacent |
|
+0
1
|
|
| 1, 11, 63, 259, 896, 2821, 8515, 24940, 70944, 196626, 534162, 1430008, 3786133, 9937397, 25902833, 67151065, 173338487, 445930356, 1144130515, 2929289696, 7487194973
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
EXAMPLE
|
All solutions for n=2
...0.0.0.0...0.0.0.1...1.0.0.0...1.0.0.1...1.1.0.0...1.1.0.1...1.1.1.0
...1.1.1.1...1.1.1.1...1.1.1.1...1.1.1.1...0.1.1.1...0.1.1.1...0.0.1.1
------
...1.1.1.0...1.1.1.1...1.1.1.1...0.1.1.1
...1.0.1.1...0.0.0.1...1.0.0.1...1.1.0.1
|
|
CROSSREFS
|
Sequence in context: A162946 A120723 A053367 this_sequence A054333 A036601 A125321
Adjacent sequences: A163703 A163704 A163705 this_sequence A163707 A163708 A163709
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net) Aug 03 2009
|
|
|
Search completed in 0.002 seconds
|
