Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 1 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
A252207
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 1 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
Terms
- a(0) =51024a(1) =215814a(2) =2908856a(3) =11207238a(4) =193004794a(5) =2778728210a(6) =10519316686a(7) =185237248134
External references
- oeis: A252207