Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal diagonal or antidiagonal elements, and new values 0..2 introduced in row major order.
A205353
Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal diagonal or antidiagonal elements, and new values 0..2 introduced in row major order.
Terms
- a(0) =14a(1) =275a(2) =12866a(3) =1329947a(4) =323378690a(5) =194089073306
External references
- oeis: A205353