Number of n X 4 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 or right-upward antidiagonal neighbors.
A209096
Number of n X 4 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 or right-upward antidiagonal neighbors.
Terms
- a(0) =14a(1) =520a(2) =20928a(3) =849548a(4) =34538488a(5) =1404480904a(6) =57113932788
External references
- oeis: A209096