Number of 4Xn 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
A207210
Number of 4Xn 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
Terms
- a(0) =69a(1) =4761a(2) =193260a(3) =7766709a(4) =317286068a(5) =12984008418a(6) =532255213048
External references
- oeis: A207210