Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 3 neighboring 1s.
A297640
Number of 4Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 3 neighboring 1s.
Terms
- a(0) =16a(1) =51a(2) =494a(3) =2370a(4) =17305a(5) =108928a(6) =771393a(7) =5215899a(8) =36981502a(9) =260922198a(10) =1863864716a(11) =13321572177a(12) =95727990305a(13) =688646063679
External references
- oeis: A297640