Number of n X 4 0..3 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..3 introduced in row major order.

A240772

Number of n X 4 0..3 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..3 introduced in row major order.

Terms

    a(0) =5a(1) =196a(2) =8319a(3) =357943a(4) =15484811a(5) =671539712a(6) =29164866719

External references