Number of n X n 0..3 arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.
A209678
Number of n X n 0..3 arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.
Terms
- a(0) =1a(1) =14a(2) =608a(3) =246038a(4) =166075313
External references
- oeis: A209678