Number of n X n 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.
A206726
Number of n X n 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.
Terms
- a(0) =3a(1) =81a(2) =11804a(3) =9974630a(4) =48956655199
External references
- oeis: A206726