Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order.
A204145
Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order.
Terms
- a(0) =689a(1) =28982a(2) =844136a(3) =26497814a(4) =839477288a(5) =25723818038a(6) =770374556792
External references
- oeis: A204145