Number of n X 3 0..4 arrays with values 0..4 introduced in row major order and no element equal to any horizontal or vertical neighbor.
A198901
Number of n X 3 0..4 arrays with values 0..4 introduced in row major order and no element equal to any horizontal or vertical neighbor.
Terms
- a(0) =2a(1) =33a(2) =1211a(3) =50384a(4) =2125425a(5) =89793204a(6) =3794115705a(7) =160319061892
External references
- oeis: A198901