Number of nX4 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.
A206573
Number of nX4 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.
Terms
- a(0) =232a(1) =53824a(2) =9509750a(3) =1665431164a(4) =290967246344
External references
- oeis: A206573