Number of nX4 0..4 arrays with no element equal to another within two positions in the same row or column, and new values 0..4 introduced in row major order.
A206355
Number of nX4 0..4 arrays with no element equal to another within two positions in the same row or column, and new values 0..4 introduced in row major order.
Terms
- a(0) =2a(1) =120a(2) =3284a(3) =91518a(4) =2545230a(5) =70894196a(6) =1973960628a(7) =54973461294
External references
- oeis: A206355