T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.

A252201

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.

Terms

    a(0) =441a(1) =585a(2) =585a(3) =970a(4) =470a(5) =970a(6) =1642a(7) =669a(8) =669a(9) =1642a(10) =2931a(11) =1313a(12) =1647a(13) =1313a(14) =2931a(15) =5316a(16) =3201a(17) =5177a(18) =5177a(19) =3201a(20) =5316a(21) =10074a(22) =8526a(23) =17541a(24) =21928a(25) =17541a(26) =8526a(27) =10074a(28) =19529a(29) =23265

External references