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

A252293

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

Terms

    a(0) =564a(1) =1130a(2) =1130a(3) =2525a(4) =1920a(5) =2525a(6) =5910a(7) =3848a(8) =3848a(9) =5910a(10) =14042a(11) =8636a(12) =8208a(13) =8636a(14) =14042a(15) =33171a(16) =20213a(17) =20558a(18) =20558a(19) =20213a(20) =33171a(21) =79607a(22) =49671a(23) =59767a(24) =68320a(25) =59767a(26) =49671a(27) =79607a(28) =192757a(29) =126017

External references