Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
A252368
Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
Terms
- a(0) =6954a(1) =48034a(2) =427362a(3) =3482672a(4) =28210122a(5) =230366506a(6) =1875961304a(7) =15268178994a(8) =124565591414
External references
- oeis: A252368