Number of nX6 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors.
A199039
Number of nX6 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors.
Terms
- a(0) =1a(1) =143a(2) =8090a(3) =674064a(4) =59029339a(5) =5590093696
External references
- oeis: A199039