Number of (n+2) X (n+2) 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.
A204390
Number of (n+2) X (n+2) 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.
Terms
- a(0) =144a(1) =4050a(2) =259808a(3) =25233408a(4) =5406738528
External references
- oeis: A204390