Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8.
A252349
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8.
Terms
- a(0) =4013a(1) =12419a(2) =42345a(3) =137488a(4) =592230a(5) =2400740a(6) =9477253a(7) =42122229a(8) =176745069a(9) =739671776a(10) =3297306209a(11) =14026096272a(12) =60863465038a(13) =271202729485
External references
- oeis: A252349