Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 1 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 1 3 4 6 or 7.
A252238
Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 1 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 1 3 4 6 or 7.
Terms
- a(0) =2174a(1) =16056a(2) =108882a(3) =331884a(4) =2908368a(5) =22430004a(6) =65274264a(7) =634913568a(8) =5227152552a(9) =14646511152a(10) =151229828160
External references
- oeis: A252238