Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 or 4.

A252289

Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 or 4.

Terms

    a(0) =5910a(1) =8636a(2) =20558a(3) =68320a(4) =254401a(5) =1012183a(6) =4209322a(7) =17769366a(8) =75470425a(9) =321306676a(10) =1369472043a(11) =5841029470a(12) =24919280843a(13) =106316764110a(14) =453616602660

External references