Number of n X n 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.
A206930
Number of n X n 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =211a(3) =6837a(4) =418876a(5) =40316253a(6) =8138711727
External references
- oeis: A206930