Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
A252469
Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
Terms
- a(0) =2380a(1) =1463a(2) =5367a(3) =22832a(4) =96543a(5) =409090a(6) =1741406a(7) =7424273a(8) =31630086a(9) =134638315a(10) =573239663a(11) =2441382370a(12) =10396957451a(13) =44272817620a(14) =188528190454a(15) =802834481243
External references
- oeis: A252469