Number of 3Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s.
A297316
Number of 3Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s.
Terms
- a(0) =1a(1) =21a(2) =117a(3) =497a(4) =2577a(5) =13937a(6) =72541a(7) =375054a(8) =1951949a(9) =10170792a(10) =52930039a(11) =275412159a(12) =1433386475a(13) =7460147264a(14) =38825258091a(15) =202060807970
External references
- oeis: A297316