Number of nX4 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
A207279
Number of nX4 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
Terms
- a(0) =214a(1) =45796a(2) =4686270a(3) =553738958a(4) =65396633910
External references
- oeis: A207279