Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5.
A252602
Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5.
Terms
- a(0) =6709a(1) =18454a(2) =71730a(3) =318274a(4) =1547711a(5) =7784629a(6) =39981376a(7) =208234989a(8) =1092285060a(9) =5754373518a(10) =30374878110a(11) =160469301012a(12) =848397475346
External references
- oeis: A252602