Number of nX6 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.
A198706
Number of nX6 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =6a(1) =3508a(2) =2654693a(3) =3075124662
External references
- oeis: A198706