Number of n X 3 0..3 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..3 introduced in row major order.
A240638
Number of n X 3 0..3 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..3 introduced in row major order.
Terms
- a(0) =2a(1) =27a(2) =462a(3) =7993a(4) =138882a(5) =2413198a(6) =41931738a(7) =728606311a(8) =12660271050a(9) =219985006177
External references
- oeis: A240638