Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7.
A252511
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7.
Terms
- a(0) =5508a(1) =25197a(2) =83016a(3) =188123a(4) =505129a(5) =1629431a(6) =5219625a(7) =16419574a(8) =50479820a(9) =156986808a(10) =499609193a(11) =1549264396a(12) =4847196904a(13) =15542087497a(14) =48295697412a(15) =152218972165a(16) =493330608947
External references
- oeis: A252511