Number of n X n 0..2 arrays avoiding the pattern z z+1 z in any row or column.
A207215
Number of n X n 0..2 arrays avoiding the pattern z z+1 z in any row or column.
Terms
- a(0) =3a(1) =81a(2) =12534a(3) =12584703a(4) =86510224720
External references
- oeis: A207215