Number of nX6 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
A209090
Number of nX6 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
Terms
- a(0) =3361a(1) =11296321a(2) =28698007940
External references
- oeis: A209090