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 no element equal to any horizontal or vertical neighbor.
A199131
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 no element equal to any horizontal or vertical neighbor.
Terms
- a(0) =5a(1) =30a(2) =264a(3) =2836a(4) =33970a(5) =438502a(6) =5926852a(7) =82908094a(8) =1187201812a(9) =17307138986a(10) =255687902462
External references
- oeis: A199131