Number of nX4 0..5 arrays with values 0..5 introduced in row major order and no element equal to any horizontal or vertical neighbor.
A198978
Number of nX4 0..5 arrays with values 0..5 introduced in row major order and no element equal to any horizontal or vertical neighbor.
Terms
- a(0) =5a(1) =481a(2) =146286a(3) =53082012a(4) =19622872903
External references
- oeis: A198978