Number of nX3 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
A207577
Number of nX3 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
Terms
- a(0) =61a(1) =3721a(2) =196916a(3) =10346480a(4) =542989615a(5) =28493353430
External references
- oeis: A207577