Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
A252326
Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
Terms
- a(0) =2018a(1) =5716a(2) =10070a(3) =63277a(4) =1091359a(5) =19701604a(6) =287805377a(7) =24700406029
External references
- oeis: A252326