T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.

A252334

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.

Terms

    a(0) =2018a(1) =4006a(2) =4006a(3) =6089a(4) =5716a(5) =6089a(6) =10227a(7) =6222a(8) =6222a(9) =10227a(10) =20782a(11) =9142a(12) =10070a(13) =9142a(14) =20782a(15) =39981a(16) =19540a(17) =22016a(18) =22016a(19) =19540a(20) =39981a(21) =72899a(22) =40178a(23) =68675a(24) =63277a(25) =68675a(26) =40178a(27) =72899a(28) =153357a(29) =89296

External references