Number of nX3 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
A283381
Number of nX3 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
Terms
- a(0) =0a(1) =3a(2) =60a(3) =532a(4) =4420a(5) =34531a(6) =257416a(7) =1862717a(8) =13180270a(9) =91663499a(10) =628776285a(11) =4264929188a(12) =28658352573a(13) =191042638980
External references
- oeis: A283381