Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
A302145
Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =17a(4) =289a(5) =15999a(6) =1728734a(7) =476725579a(8) =338788296901
External references
- oeis: A302145