T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 4 6 or 7.

A252433

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 4 6 or 7.

Terms

    a(0) =641a(1) =915a(2) =602a(3) =1142a(4) =688a(5) =608a(6) =1693a(7) =1033a(8) =914a(9) =878a(10) =2710a(11) =1488a(12) =1810a(13) =1801a(14) =1152a(15) =4342a(16) =3057a(17) =2971a(18) =3954a(19) =2993a(20) =1603a(21) =6941a(22) =6178a(23) =8430a(24) =7575a(25) =9643a(26) =6164a(27) =2617a(28) =12295a(29) =10309

External references