Number of nX6 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors.
A199355
Number of nX6 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors.
Terms
- a(0) =45a(1) =9175a(2) =36379420a(3) =6518500460
External references
- oeis: A199355