Number of nX5 0..1 arrays with every element equal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300643
Number of nX5 0..1 arrays with every element equal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =9a(2) =30a(3) =316a(4) =2998a(5) =28089a(6) =268615a(7) =2552014a(8) =24338903a(9) =231985285a(10) =2211326264a(11) =21081277233a(12) =200957956858
External references
- oeis: A300643