Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.
A252136
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.
Terms
- a(0) =909a(1) =3163a(2) =18047a(3) =96481a(4) =503968a(5) =2670175a(6) =14105069a(7) =74389231a(8) =393421141a(9) =2079994010a(10) =10983498797a(11) =58012068835a(12) =306545373194
External references
- oeis: A252136