Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.
A203372
Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.
Terms
- a(0) =12a(1) =164a(2) =5208a(3) =387324a(4) =67731264a(5) =27913330472
External references
- oeis: A203372