Number of (n+1) X (n+1) 0..3 arrays with no 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.
A203818
Number of (n+1) X (n+1) 0..3 arrays with no 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.
Terms
- a(0) =144a(1) =27216a(2) =28005264a(3) =157025515248
External references
- oeis: A203818