Number of nX4 binary arrays with some 1 horizontally or vertically adjacent to some other 1 exactly once.
A268736
Number of nX4 binary arrays with some 1 horizontally or vertically adjacent to some other 1 exactly once.
Terms
- a(0) =5a(1) =48a(2) =396a(3) =2876a(4) =19591a(5) =128232a(6) =816009a(7) =5087814a(8) =31228804a(9) =189328186a(10) =1136393919a(11) =6764778660a(12) =39991075367a(13) =235019630164
External references
- oeis: A268736