Number of nX3 0..3 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..3 introduced in row major order.
A240626
Number of nX3 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) =4a(1) =109a(2) =4369a(3) =180480a(4) =7462748a(5) =308596193a(6) =12761076882a(7) =527696013254
External references
- oeis: A240626