Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.
A203915
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.
Terms
- a(0) =112a(1) =1682a(2) =21470a(3) =262088a(4) =3191760a(5) =38438912a(6) =457030140a(7) =5384729088a(8) =62912016986a(9) =730166033682
External references
- oeis: A203915