Number of n X n 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors.
A208252
Number of n X n 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors.
Terms
- a(0) =1a(1) =12a(2) =2040a(3) =2445264a(4) =20662697664
External references
- oeis: A208252