Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8.
A252344
Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8.
Terms
- a(0) =562a(1) =1386a(2) =6986a(3) =40756a(4) =592230a(5) =11021412a(6) =249626459a(7) =15316883573a(8) =776195661759
External references
- oeis: A252344