Number of nX4 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.
A240627
Number of nX4 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.
Terms
- a(0) =12a(1) =1332a(2) =180480a(3) =24648700a(4) =3367163455a(5) =459961775083
External references
- oeis: A240627