Number of (n+2)X(n+2) symmetric binary matrices without the pattern 1 1 1 antidiagonally.
A190416
Number of (n+2)X(n+2) symmetric binary matrices without the pattern 1 1 1 antidiagonally.
Terms
- a(0) =48a(1) =432a(2) =7776a(3) =279936a(4) =18475776a(5) =2235568896a(6) =491825157120
External references
- oeis: A190416