Number of n X 2 0..3 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal.
A206791
Number of n X 2 0..3 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal.
Terms
- a(0) =16a(1) =256a(2) =3721a(3) =53824a(4) =779689a(5) =11296321a(6) =163660849a(7) =2371105636a(8) =34352398336a(9) =497694975625
External references
- oeis: A206791